NEWS
author wenzelm
Wed Aug 01 20:58:41 2018 +0200 (15 months ago ago)
changeset 68734 c14a2cc9b5ef
parent 68690 354c04092cd0
child 68740 682ff0e84387
permissions -rw-r--r--
isabelle build options -c -x -B refer to imports_graph;
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Isabelle NEWS -- history of user-relevant changes
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=================================================
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(Note: Isabelle/jEdit shows a tree-view of the NEWS file in Sidekick.)
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New in Isabelle2018 (August 2018)
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---------------------------------
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*** General ***
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* Session-qualified theory names are mandatory: it is no longer possible
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to refer to unqualified theories from the parent session.
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INCOMPATIBILITY for old developments that have not been updated to
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Isabelle2017 yet (using the "isabelle imports" tool).
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* Only the most fundamental theory names are global, usually the entry
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points to major logic sessions: Pure, Main, Complex_Main, HOLCF, IFOL,
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FOL, ZF, ZFC etc. INCOMPATIBILITY, need to use qualified names for
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formerly global "HOL-Probability.Probability" and "HOL-SPARK.SPARK".
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* Global facts need to be closed: no free variables and no hypotheses.
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Rare INCOMPATIBILITY.
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* Facts stemming from locale interpretation are subject to lazy
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evaluation for improved performance. Rare INCOMPATIBILITY: errors
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stemming from interpretation morphisms might be deferred and thus
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difficult to locate; enable system option "strict_facts" temporarily to
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avoid this.
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* Marginal comments need to be written exclusively in the new-style form
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"\<comment> \<open>text\<close>", old ASCII variants like "-- {* ... *}" are no longer
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supported. INCOMPATIBILITY, use the command-line tool "isabelle
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update_comments" to update existing theory files.
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* Old-style inner comments (* ... *) within the term language are legacy
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and will be discontinued soon: use formal comments "\<comment> \<open>...\<close>" or "\<^cancel>\<open>...\<close>"
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instead.
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* The "op <infix-op>" syntax for infix operators has been replaced by
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"(<infix-op>)". If <infix-op> begins or ends with a "*", there needs to
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be a space between the "*" and the corresponding parenthesis.
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INCOMPATIBILITY, use the command-line tool "isabelle update_op" to
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convert theory and ML files to the new syntax. Because it is based on
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regular expression matching, the result may need a bit of manual
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postprocessing. Invoking "isabelle update_op" converts all files in the
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current directory (recursively). In case you want to exclude conversion
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of ML files (because the tool frequently also converts ML's "op"
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syntax), use option "-m".
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* Theory header 'abbrevs' specifications need to be separated by 'and'.
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INCOMPATIBILITY.
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* Command 'external_file' declares the formal dependency on the given
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file name, such that the Isabelle build process knows about it, but
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without specific Prover IDE management.
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* Session ROOT entries no longer allow specification of 'files'. Rare
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INCOMPATIBILITY, use command 'external_file' within a proper theory
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context.
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* Session root directories may be specified multiple times: each
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accessible ROOT file is processed only once. This facilitates
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specification of $ISABELLE_HOME_USER/ROOTS or command-line options like
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-d or -D for "isabelle build" and "isabelle jedit". Example:
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  isabelle build -D '~~/src/ZF'
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* The command 'display_drafts' has been discontinued. INCOMPATIBILITY,
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use action "isabelle.draft" (or "print") in Isabelle/jEdit instead.
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* In HTML output, the Isabelle symbol "\<hyphen>" is rendered as explicit
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Unicode hyphen U+2010, to avoid unclear meaning of the old "soft hyphen"
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U+00AD. Rare INCOMPATIBILITY, e.g. copy-paste of historic Isabelle HTML
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output.
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*** Isabelle/jEdit Prover IDE ***
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* The command-line tool "isabelle jedit" provides more flexible options
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for session management:
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  - option -R builds an auxiliary logic image with all theories from
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    other sessions that are not already present in its parent
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  - option -S is like -R, with a focus on the selected session and its
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    descendants (this reduces startup time for big projects like AFP)
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  - option -A specifies an alternative ancestor session for options -R
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    and -S
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  - option -i includes additional sessions into the name-space of
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    theories
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  Examples:
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    isabelle jedit -R HOL-Number_Theory
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    isabelle jedit -R HOL-Number_Theory -A HOL
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    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL
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    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL-Analysis
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    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL-Analysis -i CryptHOL
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* PIDE markup for session ROOT files: allows to complete session names,
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follow links to theories and document files etc.
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* Completion supports theory header imports, using theory base name.
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E.g. "Prob" may be completed to "HOL-Probability.Probability".
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* Named control symbols (without special Unicode rendering) are shown as
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bold-italic keyword. This is particularly useful for the short form of
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antiquotations with control symbol: \<^name>\<open>argument\<close>. The action
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"isabelle.antiquoted_cartouche" turns an antiquotation with 0 or 1
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arguments into this format.
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* Completion provides templates for named symbols with arguments,
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e.g. "\<comment> \<open>ARGUMENT\<close>" or "\<^emph>\<open>ARGUMENT\<close>".
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* Slightly more parallel checking, notably for high priority print
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functions (e.g. State output).
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* The view title is set dynamically, according to the Isabelle
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distribution and the logic session name. The user can override this via
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set-view-title (stored persistently in $JEDIT_SETTINGS/perspective.xml).
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* System options "spell_checker_include" and "spell_checker_exclude"
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supersede former "spell_checker_elements" to determine regions of text
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that are subject to spell-checking. Minor INCOMPATIBILITY.
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* Action "isabelle.preview" is able to present more file formats,
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notably bibtex database files and ML files.
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* Action "isabelle.draft" is similar to "isabelle.preview", but shows a
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plain-text document draft. Both are available via the menu "Plugins /
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Isabelle".
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* When loading text files, the Isabelle symbols encoding UTF-8-Isabelle
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is only used if there is no conflict with existing Unicode sequences in
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the file. Otherwise, the fallback encoding is plain UTF-8 and Isabelle
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symbols remain in literal \<symbol> form. This avoids accidental loss of
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Unicode content when saving the file.
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* Bibtex database files (.bib) are semantically checked.
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* Update to jedit-5.5.0, the latest release.
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*** Isabelle/VSCode Prover IDE ***
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* HTML preview of theories and other file-formats similar to
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Isabelle/jEdit.
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* Command-line tool "isabelle vscode_server" accepts the same options
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-A, -R, -S, -i for session selection as "isabelle jedit". This is
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relevant for isabelle.args configuration settings in VSCode. The former
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option -A (explore all known session files) has been discontinued: it is
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enabled by default, unless option -S is used to focus on a particular
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spot in the session structure. INCOMPATIBILITY.
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*** Document preparation ***
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* Formal comments work uniformly in outer syntax, inner syntax (term
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language), Isabelle/ML and some other embedded languages of Isabelle.
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See also "Document comments" in the isar-ref manual. The following forms
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are supported:
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  - marginal text comment: \<comment> \<open>\<dots>\<close>
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  - canceled source: \<^cancel>\<open>\<dots>\<close>
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  - raw LaTeX: \<^latex>\<open>\<dots>\<close>
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* Outside of the inner theory body, the default presentation context is
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theory Pure. Thus elementary antiquotations may be used in markup
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commands (e.g. 'chapter', 'section', 'text') and formal comments.
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* System option "document_tags" specifies alternative command tags. This
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is occasionally useful to control the global visibility of commands via
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session options (e.g. in ROOT).
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* Document markup commands ('section', 'text' etc.) are implicitly
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tagged as "document" and visible by default. This avoids the application
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of option "document_tags" to these commands.
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* Isabelle names are mangled into LaTeX macro names to allow the full
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identifier syntax with underscore, prime, digits. This is relevant for
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antiquotations in control symbol notation, e.g. \<^const_name> becomes
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\isactrlconstUNDERSCOREname.
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* Document preparation with skip_proofs option now preserves the content
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more accurately: only terminal proof steps ('by' etc.) are skipped.
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* Document antiquotation @{theory name} requires the long
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session-qualified theory name: this is what users reading the text
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normally need to import.
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* Document antiquotation @{session name} checks and prints the given
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session name verbatim.
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* Document antiquotation @{cite} now checks the given Bibtex entries
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against the Bibtex database files -- only in batch-mode session builds.
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* Command-line tool "isabelle document" has been re-implemented in
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Isabelle/Scala, with simplified arguments and explicit errors from the
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latex and bibtex process. Minor INCOMPATIBILITY.
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* Session ROOT entry: empty 'document_files' means there is no document
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for this session. There is no need to specify options [document = false]
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anymore.
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*** Isar ***
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* Command 'interpret' no longer exposes resulting theorems as literal
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facts, notably for the \<open>prop\<close> notation or the "fact" proof method. This
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improves modularity of proofs and scalability of locale interpretation.
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Rare INCOMPATIBILITY, need to refer to explicitly named facts instead
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(e.g. use 'find_theorems' or 'try' to figure this out).
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* The old 'def' command has been discontinued (legacy since
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Isbelle2016-1). INCOMPATIBILITY, use 'define' instead -- usually with
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object-logic equality or equivalence.
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*** Pure ***
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* The inner syntax category "sort" now includes notation "_" for the
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dummy sort: it is effectively ignored in type-inference.
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* Rewrites clauses (keyword 'rewrites') were moved into the locale
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expression syntax, where they are part of locale instances. In
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interpretation commands rewrites clauses now need to occur before 'for'
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and 'defines'. Rare INCOMPATIBILITY; definitions immediately subject to
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rewriting may need to be pulled up into the surrounding theory.
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* For 'rewrites' clauses, if activating a locale instance fails, fall
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back to reading the clause first. This helps avoid qualification of
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locale instances where the qualifier's sole purpose is avoiding
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duplicate constant declarations.
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* Proof method "simp" now supports a new modifier "flip:" followed by a
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list of theorems. Each of these theorems is removed from the simpset
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(without warning if it is not there) and the symmetric version of the
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theorem (i.e. lhs and rhs exchanged) is added to the simpset. For "auto"
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and friends the modifier is "simp flip:".
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*** HOL ***
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* Sledgehammer: bundled version of "vampire" (for non-commercial users)
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helps to avoid fragility of "remote_vampire" service.
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* Clarified relationship of characters, strings and code generation:
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  - Type "char" is now a proper datatype of 8-bit values.
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  - Conversions "nat_of_char" and "char_of_nat" are gone; use more
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    general conversions "of_char" and "char_of" with suitable type
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    constraints instead.
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  - The zero character is just written "CHR 0x00", not "0" any longer.
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  - Type "String.literal" (for code generation) is now isomorphic to
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    lists of 7-bit (ASCII) values; concrete values can be written as
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    "STR ''...''" for sequences of printable characters and "STR 0x..."
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    for one single ASCII code point given as hexadecimal numeral.
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  - Type "String.literal" supports concatenation "... + ..." for all
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    standard target languages.
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  - Theory HOL-Library.Code_Char is gone; study the explanations
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    concerning "String.literal" in the tutorial on code generation to
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    get an idea how target-language string literals can be converted to
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    HOL string values and vice versa.
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  - Session Imperative-HOL: operation "raise" directly takes a value of
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    type "String.literal" as argument, not type "string".
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INCOMPATIBILITY.
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* Code generation: Code generation takes an explicit option
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"case_insensitive" to accomodate case-insensitive file systems.
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* Abstract bit operations as part of Main: push_bit, take_bit, drop_bit.
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* New, more general, axiomatization of complete_distrib_lattice. The
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former axioms:
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  "sup x (Inf X) = Inf (sup x ` X)" and "inf x (Sup X) = Sup (inf x ` X)"
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are replaced by:
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  "Inf (Sup ` A) <= Sup (Inf ` {f ` A | f . (! Y \<in> A . f Y \<in> Y)})"
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The instantiations of sets and functions as complete_distrib_lattice are
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moved to Hilbert_Choice.thy because their proofs need the Hilbert choice
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operator. The dual of this property is also proved in theory
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HOL.Hilbert_Choice.
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* New syntax for the minimum/maximum of a function over a finite set:
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MIN x\<in>A. B and even MIN x. B (only useful for finite types), also MAX.
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* Clarifed theorem names:
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  Min.antimono ~> Min.subset_imp
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  Max.antimono ~> Max.subset_imp
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Minor INCOMPATIBILITY.
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* SMT module:
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  - The 'smt_oracle' option is now necessary when using the 'smt' method
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    with a solver other than Z3. INCOMPATIBILITY.
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  - The encoding to first-order logic is now more complete in the
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    presence of higher-order quantifiers. An 'smt_explicit_application'
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    option has been added to control this. INCOMPATIBILITY.
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* Facts sum.commute(_restrict) and prod.commute(_restrict) renamed to
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sum.swap(_restrict) and prod.swap(_restrict), to avoid name clashes on
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interpretation of abstract locales. INCOMPATIBILITY.
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* Predicate coprime is now a real definition, not a mere abbreviation.
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INCOMPATIBILITY.
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* Predicate pairwise_coprime abolished, use "pairwise coprime" instead.
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INCOMPATIBILITY.
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* The relator rel_filter on filters has been strengthened to its
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canonical categorical definition with better properties.
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INCOMPATIBILITY.
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* Generalized linear algebra involving linear, span, dependent, dim
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from type class real_vector to locales module and vector_space.
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Renamed:
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  span_inc ~> span_superset
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  span_superset ~> span_base
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  span_eq ~> span_eq_iff
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INCOMPATIBILITY.
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* Class linordered_semiring_1 covers zero_less_one also, ruling out
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pathologic instances. Minor INCOMPATIBILITY.
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* Theory HOL.List: functions "sorted_wrt" and "sorted" now compare every
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element in a list to all following elements, not just the next one.
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* Theory HOL.List syntax:
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   347
wenzelm@68394
   348
  - filter-syntax "[x <- xs. P]" is no longer output syntax, but only
wenzelm@68394
   349
    input syntax
wenzelm@68394
   350
wenzelm@68394
   351
  - list comprehension syntax now supports tuple patterns in "pat <- xs"
nipkow@68250
   352
nipkow@68450
   353
* Theory Map: "empty" must now be qualified as "Map.empty".
nipkow@68450
   354
haftmann@67051
   355
* Removed nat-int transfer machinery. Rare INCOMPATIBILITY.
haftmann@67051
   356
haftmann@68103
   357
* Fact mod_mult_self4 (on nat) renamed to Suc_mod_mult_self3, to avoid
haftmann@68103
   358
clash with fact mod_mult_self4 (on more generic semirings).
haftmann@68103
   359
INCOMPATIBILITY.
haftmann@68103
   360
haftmann@68103
   361
* Eliminated some theorem aliasses:
haftmann@68103
   362
  even_times_iff ~> even_mult_iff
haftmann@68103
   363
  mod_2_not_eq_zero_eq_one_nat ~> not_mod_2_eq_0_eq_1
haftmann@68103
   364
  even_of_nat ~> even_int_iff
haftmann@68103
   365
haftmann@68103
   366
INCOMPATIBILITY.
haftmann@68103
   367
haftmann@68157
   368
* Eliminated some theorem duplicate variations:
wenzelm@68394
   369
wenzelm@68394
   370
  - dvd_eq_mod_eq_0_numeral can be replaced by dvd_eq_mod_eq_0
wenzelm@68394
   371
  - mod_Suc_eq_Suc_mod can be replaced by mod_Suc
wenzelm@68394
   372
  - mod_Suc_eq_Suc_mod [symmetrict] can be replaced by mod_simps
wenzelm@68394
   373
  - mod_eq_0_iff can be replaced by mod_eq_0_iff_dvd and dvd_def
wenzelm@68394
   374
  - the witness of mod_eqD can be given directly as "_ div _"
haftmann@68157
   375
haftmann@68157
   376
INCOMPATIBILITY.
haftmann@68157
   377
haftmann@68260
   378
* Classical setup: Assumption "m mod d = 0" (for m d :: nat) is no
wenzelm@68394
   379
longer aggresively destroyed to "\<exists>q. m = d * q". INCOMPATIBILITY, adding
wenzelm@68394
   380
"elim!: dvd" to classical proof methods in most situations restores
wenzelm@68394
   381
broken proofs.
wenzelm@68394
   382
wenzelm@68394
   383
* Theory HOL-Library.Conditional_Parametricity provides command
wenzelm@68394
   384
'parametric_constant' for proving parametricity of non-recursive
wenzelm@68394
   385
definitions. For constants that are not fully parametric the command
wenzelm@68394
   386
will infer conditions on relations (e.g., bi_unique, bi_total, or type
wenzelm@68394
   387
class conditions such as "respects 0") sufficient for parametricity. See
wenzelm@68394
   388
theory HOL-ex.Conditional_Parametricity_Examples for some examples.
wenzelm@68394
   389
wenzelm@68394
   390
* Theory HOL-Library.Code_Lazy provides a new preprocessor for the code
wenzelm@68394
   391
generator to generate code for algebraic types with lazy evaluation
Andreas@68639
   392
semantics even in call-by-value target languages. See the theories
wenzelm@68647
   393
HOL-ex.Code_Lazy_Demo and HOL-Codegenerator_Test.Code_Lazy_Test for some
wenzelm@68647
   394
examples.
wenzelm@68394
   395
wenzelm@68394
   396
* Theory HOL-Library.Landau_Symbols has been moved here from AFP.
wenzelm@68394
   397
wenzelm@68394
   398
* Theory HOL-Library.Old_Datatype no longer provides the legacy command
wenzelm@68394
   399
'old_datatype'. INCOMPATIBILITY.
wenzelm@68394
   400
wenzelm@68394
   401
* Theory HOL-Computational_Algebra.Polynomial_Factorial does not provide
wenzelm@68394
   402
instances of rat, real, complex as factorial rings etc. Import
wenzelm@68394
   403
HOL-Computational_Algebra.Field_as_Ring explicitly in case of need.
wenzelm@68394
   404
INCOMPATIBILITY.
wenzelm@68394
   405
wenzelm@68394
   406
* Session HOL-Algebra: renamed (^) to [^] to avoid conflict with new
wenzelm@68394
   407
infix/prefix notation.
wenzelm@68394
   408
wenzelm@68543
   409
* Session HOL-Algebra: revamped with much new material. The set of
wenzelm@68543
   410
isomorphisms between two groups is now denoted iso rather than iso_set.
wenzelm@68543
   411
INCOMPATIBILITY.
wenzelm@68543
   412
wenzelm@68543
   413
* Session HOL-Analysis: the Arg function now respects the same interval
wenzelm@68543
   414
as Ln, namely (-pi,pi]; the old Arg function has been renamed Arg2pi.
lp15@68495
   415
INCOMPATIBILITY.
lp15@68495
   416
wenzelm@68548
   417
* Session HOL-Analysis: the functions zorder, zer_poly, porder and
wenzelm@68548
   418
pol_poly have been redefined. All related lemmas have been reworked.
wl302@68532
   419
INCOMPATIBILITY.
wl302@68532
   420
wenzelm@68394
   421
* Session HOL-Analysis: infinite products, Moebius functions, the
wenzelm@68394
   422
Riemann mapping theorem, the Vitali covering theorem,
wenzelm@68394
   423
change-of-variables results for integration and measures.
haftmann@68260
   424
wenzelm@68647
   425
* Session HOL-Real_Asymp: proof method "real_asymp" proves asymptotics
wenzelm@68647
   426
or real-valued functions (limits, "Big-O", etc.) automatically.
wenzelm@68681
   427
See also ~~/src/HOL/Real_Asymp/Manual for some documentation.
wenzelm@68647
   428
wenzelm@68545
   429
* Session HOL-Types_To_Sets: more tool support (unoverload_type combines
wenzelm@68545
   430
internalize_sorts and unoverload) and larger experimental application
wenzelm@68545
   431
(type based linear algebra transferred to linear algebra on subspaces).
immler@68522
   432
wenzelm@66653
   433
wenzelm@68121
   434
*** ML ***
wenzelm@68121
   435
wenzelm@68121
   436
* Operation Export.export emits theory exports (arbitrary blobs), which
wenzelm@68121
   437
are stored persistently in the session build database.
wenzelm@68121
   438
wenzelm@68281
   439
* Command 'ML_export' exports ML toplevel bindings to the global
wenzelm@68281
   440
bootstrap environment of the ML process. This allows ML evaluation
wenzelm@68281
   441
without a formal theory context, e.g. in command-line tools like
wenzelm@68281
   442
"isabelle process".
wenzelm@68281
   443
wenzelm@68121
   444
wenzelm@66729
   445
*** System ***
wenzelm@66729
   446
wenzelm@67088
   447
* Mac OS X 10.10 Yosemite is now the baseline version; Mavericks is no
wenzelm@67088
   448
longer supported.
wenzelm@67088
   449
wenzelm@68394
   450
* Linux and Windows/Cygwin is for x86_64 only, old 32bit platform
wenzelm@68394
   451
support has been discontinued.
wenzelm@68394
   452
wenzelm@66906
   453
* Java runtime is for x86_64 only. Corresponding Isabelle settings have
wenzelm@66906
   454
been renamed to ISABELLE_TOOL_JAVA_OPTIONS and JEDIT_JAVA_OPTIONS,
wenzelm@66906
   455
instead of former 32/64 variants. INCOMPATIBILITY.
wenzelm@66906
   456
wenzelm@68004
   457
* Old settings ISABELLE_PLATFORM and ISABELLE_WINDOWS_PLATFORM should be
wenzelm@68004
   458
phased out due to unclear preference of 32bit vs. 64bit architecture.
wenzelm@68004
   459
Explicit GNU bash expressions are now preferred, for example (with
wenzelm@68004
   460
quotes):
wenzelm@68004
   461
wenzelm@68004
   462
  #Posix executables (Unix or Cygwin), with preference for 64bit
wenzelm@68004
   463
  "${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}"
wenzelm@68004
   464
wenzelm@68004
   465
  #native Windows or Unix executables, with preference for 64bit
wenzelm@68004
   466
  "${ISABELLE_WINDOWS_PLATFORM64:-${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}}"
wenzelm@68004
   467
wenzelm@68004
   468
  #native Windows (32bit) or Unix executables (preference for 64bit)
wenzelm@68004
   469
  "${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}"
wenzelm@68004
   470
wenzelm@66745
   471
* Command-line tool "isabelle build" supports new options:
wenzelm@66745
   472
  - option -B NAME: include session NAME and all descendants
wenzelm@66745
   473
  - option -S: only observe changes of sources, not heap images
wenzelm@66841
   474
  - option -f: forces a fresh build
wenzelm@66737
   475
wenzelm@68734
   476
* Command-line tool "isabelle build" options -c -x -B refer to
wenzelm@68734
   477
descendants wrt. the session parent or import graph. Subtle
wenzelm@68734
   478
INCOMPATIBILITY: options -c -x used to refer to the session parent graph
wenzelm@68734
   479
only.
wenzelm@68734
   480
wenzelm@66843
   481
* Command-line tool "isabelle build" takes "condition" options with the
wenzelm@66843
   482
corresponding environment values into account, when determining the
wenzelm@66843
   483
up-to-date status of a session.
wenzelm@66843
   484
wenzelm@68394
   485
* The command-line tool "dump" dumps information from the cumulative
wenzelm@68394
   486
PIDE session database: many sessions may be loaded into a given logic
wenzelm@68394
   487
image, results from all loaded theories are written to the output
wenzelm@68394
   488
directory.
wenzelm@68394
   489
wenzelm@66851
   490
* Command-line tool "isabelle imports -I" also reports actual session
wenzelm@66851
   491
imports. This helps to minimize the session dependency graph.
wenzelm@66851
   492
wenzelm@68394
   493
* The command-line tool "export" and 'export_files' in session ROOT
wenzelm@68394
   494
entries retrieve theory exports from the session build database.
wenzelm@68394
   495
wenzelm@68394
   496
* The command-line tools "isabelle server" and "isabelle client" provide
wenzelm@68394
   497
access to the Isabelle Server: it supports responsive session management
wenzelm@68394
   498
and concurrent use of theories, based on Isabelle/PIDE infrastructure.
wenzelm@68394
   499
See also the "system" manual.
wenzelm@68394
   500
wenzelm@68394
   501
* The command-line tool "isabelle update_comments" normalizes formal
wenzelm@68394
   502
comments in outer syntax as follows: \<comment> \<open>text\<close> (whith a single space to
wenzelm@68394
   503
approximate the appearance in document output). This is more specific
wenzelm@68394
   504
than former "isabelle update_cartouches -c": the latter tool option has
wenzelm@68394
   505
been discontinued.
wenzelm@68394
   506
wenzelm@68394
   507
* The command-line tool "isabelle mkroot" now always produces a document
wenzelm@68394
   508
outline: its options have been adapted accordingly. INCOMPATIBILITY.
wenzelm@68394
   509
wenzelm@68394
   510
* The command-line tool "isabelle mkroot -I" initializes a Mercurial
wenzelm@68394
   511
repository for the generated session files.
wenzelm@68394
   512
wenzelm@68523
   513
* Settings ISABELLE_HEAPS + ISABELLE_BROWSER_INFO (or
wenzelm@68523
   514
ISABELLE_HEAPS_SYSTEM + ISABELLE_BROWSER_INFO_SYSTEM in "system build
wenzelm@68523
   515
mode") determine the directory locations of the main build artefacts --
wenzelm@68523
   516
instead of hard-wired directories in ISABELLE_HOME_USER (or
wenzelm@68523
   517
ISABELLE_HOME).
wenzelm@68523
   518
wenzelm@68394
   519
* Settings ISABELLE_PATH and ISABELLE_OUTPUT have been discontinued:
wenzelm@68394
   520
heap images and session databases are always stored in
wenzelm@68523
   521
$ISABELLE_HEAPS/$ML_IDENTIFIER (command-line default) or
wenzelm@68523
   522
$ISABELLE_HEAPS_SYSTEM/$ML_IDENTIFIER (main Isabelle application or
wenzelm@68394
   523
"isabelle jedit -s" or "isabelle build -s").
wenzelm@67099
   524
wenzelm@67199
   525
* ISABELLE_LATEX and ISABELLE_PDFLATEX now include platform-specific
wenzelm@67199
   526
options for improved error reporting. Potential INCOMPATIBILITY with
wenzelm@67199
   527
unusual LaTeX installations, may have to adapt these settings.
wenzelm@67199
   528
wenzelm@68394
   529
* Update to Poly/ML 5.7.1 with slightly improved performance and PIDE
wenzelm@68394
   530
markup for identifier bindings. It now uses The GNU Multiple Precision
wenzelm@67591
   531
Arithmetic Library (libgmp) on all platforms, notably Mac OS X with
wenzelm@67591
   532
32/64 bit.
wenzelm@67591
   533
wenzelm@67099
   534
wenzelm@66729
   535
wenzelm@66472
   536
New in Isabelle2017 (October 2017)
wenzelm@66472
   537
----------------------------------
wenzelm@64439
   538
wenzelm@64986
   539
*** General ***
wenzelm@64986
   540
wenzelm@66238
   541
* Experimental support for Visual Studio Code (VSCode) as alternative
wenzelm@66238
   542
Isabelle/PIDE front-end, see also
wenzelm@66601
   543
https://marketplace.visualstudio.com/items?itemName=makarius.Isabelle2017
wenzelm@66238
   544
wenzelm@66238
   545
VSCode is a new type of application that continues the concepts of
wenzelm@66238
   546
"programmer's editor" and "integrated development environment" towards
wenzelm@66238
   547
fully semantic editing and debugging -- in a relatively light-weight
wenzelm@66238
   548
manner. Thus it fits nicely on top of the Isabelle/PIDE infrastructure.
wenzelm@66238
   549
Technically, VSCode is based on the Electron application framework
wenzelm@66238
   550
(Node.js + Chromium browser + V8), which is implemented in JavaScript
wenzelm@66238
   551
and TypeScript, while Isabelle/VSCode mainly consists of Isabelle/Scala
wenzelm@66238
   552
modules around a Language Server implementation.
wenzelm@66238
   553
wenzelm@65504
   554
* Theory names are qualified by the session name that they belong to.
wenzelm@66454
   555
This affects imports, but not the theory name space prefix (which is
wenzelm@66454
   556
just the theory base name as before).
wenzelm@66454
   557
wenzelm@66454
   558
In order to import theories from other sessions, the ROOT file format
wenzelm@66454
   559
provides a new 'sessions' keyword. In contrast, a theory that is
wenzelm@66454
   560
imported in the old-fashioned manner via an explicit file-system path
wenzelm@66472
   561
belongs to the current session, and might cause theory name conflicts
wenzelm@66454
   562
later on. Theories that are imported from other sessions are excluded
wenzelm@66454
   563
from the current session document. The command-line tool "isabelle
wenzelm@66454
   564
imports" helps to update theory imports.
wenzelm@66454
   565
wenzelm@65451
   566
* The main theory entry points for some non-HOL sessions have changed,
wenzelm@65451
   567
to avoid confusion with the global name "Main" of the session HOL. This
wenzelm@65451
   568
leads to the follow renamings:
wenzelm@65451
   569
wenzelm@65451
   570
  CTT/Main.thy    ~>  CTT/CTT.thy
wenzelm@65451
   571
  ZF/Main.thy     ~>  ZF/ZF.thy
wenzelm@65451
   572
  ZF/Main_ZF.thy  ~>  ZF/ZF.thy
wenzelm@65451
   573
  ZF/Main_ZFC.thy ~>  ZF/ZFC.thy
wenzelm@65451
   574
  ZF/ZF.thy       ~>  ZF/ZF_Base.thy
wenzelm@65451
   575
wenzelm@65451
   576
INCOMPATIBILITY.
wenzelm@65451
   577
wenzelm@66472
   578
* Commands 'alias' and 'type_alias' introduce aliases for constants and
wenzelm@66472
   579
type constructors, respectively. This allows adhoc changes to name-space
wenzelm@66472
   580
accesses within global or local theory contexts, e.g. within a 'bundle'.
wenzelm@66472
   581
wenzelm@64986
   582
* Document antiquotations @{prf} and @{full_prf} output proof terms
wenzelm@64986
   583
(again) in the same way as commands 'prf' and 'full_prf'.
wenzelm@64986
   584
wenzelm@65055
   585
* Computations generated by the code generator can be embedded directly
wenzelm@65055
   586
into ML, alongside with @{code} antiquotations, using the following
wenzelm@65055
   587
antiquotations:
wenzelm@65055
   588
wenzelm@65055
   589
  @{computation ... terms: ... datatypes: ...} :
wenzelm@65055
   590
    ((term -> term) -> 'ml option -> 'a) -> Proof.context -> term -> 'a
wenzelm@65055
   591
  @{computation_conv ... terms: ... datatypes: ...} :
wenzelm@65055
   592
    (Proof.context -> 'ml -> conv) -> Proof.context -> conv
wenzelm@65045
   593
  @{computation_check terms: ... datatypes: ...} : Proof.context -> conv
haftmann@65041
   594
wenzelm@65055
   595
See src/HOL/ex/Computations.thy,
wenzelm@65055
   596
src/HOL/Decision_Procs/Commutative_Ring.thy and
wenzelm@65055
   597
src/HOL/Decision_Procs/Reflective_Field.thy for examples and the
wenzelm@65055
   598
tutorial on code generation.
haftmann@65041
   599
wenzelm@64986
   600
wenzelm@64602
   601
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@64602
   602
wenzelm@66472
   603
* Session-qualified theory imports allow the Prover IDE to process
wenzelm@66472
   604
arbitrary theory hierarchies independently of the underlying logic
wenzelm@66472
   605
session image (e.g. option "isabelle jedit -l"), but the directory
wenzelm@66472
   606
structure needs to be known in advance (e.g. option "isabelle jedit -d"
wenzelm@66472
   607
or a line in the file $ISABELLE_HOME_USER/ROOTS).
wenzelm@64602
   608
wenzelm@64842
   609
* The PIDE document model maintains file content independently of the
wenzelm@64842
   610
status of jEdit editor buffers. Reloading jEdit buffers no longer causes
wenzelm@64842
   611
changes of formal document content. Theory dependencies are always
wenzelm@64842
   612
resolved internally, without the need for corresponding editor buffers.
wenzelm@64842
   613
The system option "jedit_auto_load" has been discontinued: it is
wenzelm@64842
   614
effectively always enabled.
wenzelm@64842
   615
wenzelm@64867
   616
* The Theories dockable provides a "Purge" button, in order to restrict
wenzelm@64867
   617
the document model to theories that are required for open editor
wenzelm@64867
   618
buffers.
wenzelm@64867
   619
wenzelm@66426
   620
* The Theories dockable indicates the overall status of checking of each
wenzelm@66426
   621
entry. When all forked tasks of a theory are finished, the border is
wenzelm@66426
   622
painted with thick lines; remaining errors in this situation are
wenzelm@66426
   623
represented by a different border color.
wenzelm@66426
   624
wenzelm@66472
   625
* Automatic indentation is more careful to avoid redundant spaces in
wenzelm@66472
   626
intermediate situations. Keywords are indented after input (via typed
wenzelm@66472
   627
characters or completion); see also option "jedit_indent_input".
wenzelm@66472
   628
wenzelm@66472
   629
* Action "isabelle.preview" opens an HTML preview of the current theory
wenzelm@66472
   630
document in the default web browser.
wenzelm@66472
   631
wenzelm@66576
   632
* Command-line invocation "isabelle jedit -R -l LOGIC" opens the ROOT
wenzelm@66576
   633
entry of the specified logic session in the editor, while its parent is
wenzelm@66576
   634
used for formal checking.
wenzelm@66472
   635
wenzelm@66463
   636
* The main Isabelle/jEdit plugin may be restarted manually (using the
wenzelm@66463
   637
jEdit Plugin Manager), as long as the "Isabelle Base" plugin remains
wenzelm@66463
   638
enabled at all times.
wenzelm@66463
   639
wenzelm@66472
   640
* Update to current jedit-5.4.0.
wenzelm@65329
   641
wenzelm@64602
   642
haftmann@66149
   643
*** Pure ***
haftmann@66149
   644
haftmann@66149
   645
* Deleting the last code equations for a particular function using
haftmann@66149
   646
[code del] results in function with no equations (runtime abort) rather
wenzelm@66472
   647
than an unimplemented function (generation time abort). Use explicit
haftmann@66667
   648
[[code drop:]] to enforce the latter. Minor INCOMPATIBILITY.
haftmann@66149
   649
haftmann@66313
   650
* Proper concept of code declarations in code.ML:
wenzelm@66472
   651
  - Regular code declarations act only on the global theory level, being
wenzelm@66472
   652
    ignored with warnings if syntactically malformed.
wenzelm@66472
   653
  - Explicitly global code declarations yield errors if syntactically
wenzelm@66472
   654
    malformed.
wenzelm@66472
   655
  - Default code declarations are silently ignored if syntactically
wenzelm@66472
   656
    malformed.
haftmann@66313
   657
Minor INCOMPATIBILITY.
haftmann@66313
   658
wenzelm@66472
   659
* Clarified and standardized internal data bookkeeping of code
wenzelm@66472
   660
declarations: history of serials allows to track potentially
wenzelm@66472
   661
non-monotonous declarations appropriately. Minor INCOMPATIBILITY.
haftmann@66313
   662
haftmann@66149
   663
haftmann@64593
   664
*** HOL ***
haftmann@64593
   665
blanchet@66616
   666
* The Nunchaku model finder is now part of "Main".
blanchet@66616
   667
wenzelm@66472
   668
* SMT module:
wenzelm@66472
   669
  - A new option, 'smt_nat_as_int', has been added to translate 'nat' to
wenzelm@66472
   670
    'int' and benefit from the SMT solver's theory reasoning. It is
wenzelm@66472
   671
    disabled by default.
wenzelm@66472
   672
  - The legacy module "src/HOL/Library/Old_SMT.thy" has been removed.
wenzelm@66472
   673
  - Several small issues have been rectified in the 'smt' command.
wenzelm@66472
   674
wenzelm@66472
   675
* (Co)datatype package: The 'size_gen_o_map' lemma is no longer
wenzelm@66472
   676
generated for datatypes with type class annotations. As a result, the
wenzelm@66472
   677
tactic that derives it no longer fails on nested datatypes. Slight
wenzelm@66472
   678
INCOMPATIBILITY.
eberlm@66450
   679
haftmann@66348
   680
* Command and antiquotation "value" with modified default strategy:
haftmann@66348
   681
terms without free variables are always evaluated using plain evaluation
wenzelm@66472
   682
only, with no fallback on normalization by evaluation. Minor
wenzelm@66472
   683
INCOMPATIBILITY.
eberlm@65956
   684
wenzelm@65552
   685
* Theories "GCD" and "Binomial" are already included in "Main" (instead
wenzelm@65575
   686
of "Complex_Main").
wenzelm@65552
   687
haftmann@65170
   688
* Constant "surj" is a full input/output abbreviation (again).
haftmann@65170
   689
Minor INCOMPATIBILITY.
haftmann@65170
   690
haftmann@64632
   691
* Dropped aliasses RangeP, DomainP for Rangep, Domainp respectively.
haftmann@64632
   692
INCOMPATIBILITY.
haftmann@64632
   693
wenzelm@66472
   694
* Renamed ii to imaginary_unit in order to free up ii as a variable
wenzelm@66472
   695
name. The syntax \<i> remains available. INCOMPATIBILITY.
wenzelm@66472
   696
wenzelm@66472
   697
* Dropped abbreviations transP, antisymP, single_valuedP; use constants
wenzelm@66472
   698
transp, antisymp, single_valuedp instead. INCOMPATIBILITY.
wenzelm@66472
   699
wenzelm@66472
   700
* Constant "subseq" in Topological_Spaces has been removed -- it is
wenzelm@66472
   701
subsumed by "strict_mono". Some basic lemmas specific to "subseq" have
wenzelm@66472
   702
been renamed accordingly, e.g. "subseq_o" -> "strict_mono_o" etc.
wenzelm@66472
   703
wenzelm@66472
   704
* Theory List: "sublist" renamed to "nths" in analogy with "nth", and
wenzelm@66472
   705
"sublisteq" renamed to "subseq". Minor INCOMPATIBILITY.
wenzelm@66472
   706
wenzelm@66472
   707
* Theory List: new generic function "sorted_wrt".
wenzelm@66472
   708
wenzelm@66472
   709
* Named theorems mod_simps covers various congruence rules concerning
wenzelm@66472
   710
mod, replacing former zmod_simps. INCOMPATIBILITY.
haftmann@64787
   711
haftmann@64593
   712
* Swapped orientation of congruence rules mod_add_left_eq,
haftmann@64593
   713
mod_add_right_eq, mod_add_eq, mod_mult_left_eq, mod_mult_right_eq,
haftmann@64593
   714
mod_mult_eq, mod_minus_eq, mod_diff_left_eq, mod_diff_right_eq,
wenzelm@66472
   715
mod_diff_eq. INCOMPATIBILITY.
haftmann@64593
   716
haftmann@64593
   717
* Generalized some facts:
blanchet@64876
   718
    measure_induct_rule
blanchet@64876
   719
    measure_induct
haftmann@64593
   720
    zminus_zmod ~> mod_minus_eq
haftmann@64593
   721
    zdiff_zmod_left ~> mod_diff_left_eq
haftmann@64593
   722
    zdiff_zmod_right ~> mod_diff_right_eq
haftmann@64593
   723
    zmod_eq_dvd_iff ~> mod_eq_dvd_iff
haftmann@64593
   724
INCOMPATIBILITY.
haftmann@64593
   725
wenzelm@66472
   726
* Algebraic type class hierarchy of euclidean (semi)rings in HOL:
wenzelm@66472
   727
euclidean_(semi)ring, euclidean_(semi)ring_cancel,
wenzelm@66472
   728
unique_euclidean_(semi)ring; instantiation requires provision of a
wenzelm@66472
   729
euclidean size.
wenzelm@66472
   730
wenzelm@66472
   731
* Theory "HOL-Number_Theory.Euclidean_Algorithm" has been reworked:
wenzelm@66472
   732
  - Euclidean induction is available as rule eucl_induct.
wenzelm@66472
   733
  - Constants Euclidean_Algorithm.gcd, Euclidean_Algorithm.lcm,
wenzelm@66472
   734
    Euclidean_Algorithm.Gcd and Euclidean_Algorithm.Lcm allow
wenzelm@66472
   735
    easy instantiation of euclidean (semi)rings as GCD (semi)rings.
wenzelm@66472
   736
  - Coefficients obtained by extended euclidean algorithm are
wenzelm@66472
   737
    available as "bezout_coefficients".
wenzelm@66472
   738
INCOMPATIBILITY.
wenzelm@66472
   739
wenzelm@66472
   740
* Theory "Number_Theory.Totient" introduces basic notions about Euler's
wenzelm@66472
   741
totient function previously hidden as solitary example in theory
wenzelm@66472
   742
Residues. Definition changed so that "totient 1 = 1" in agreement with
wenzelm@66472
   743
the literature. Minor INCOMPATIBILITY.
wenzelm@66472
   744
wenzelm@66542
   745
* New styles in theory "HOL-Library.LaTeXsugar":
nipkow@66541
   746
  - "dummy_pats" for printing equations with "_" on the lhs;
nipkow@66541
   747
  - "eta_expand" for printing eta-expanded terms.
nipkow@66541
   748
wenzelm@66472
   749
* Theory "HOL-Library.Permutations": theorem bij_swap_ompose_bij has
wenzelm@66472
   750
been renamed to bij_swap_compose_bij. INCOMPATIBILITY.
wenzelm@66472
   751
lp15@66645
   752
* New theory "HOL-Library.Going_To_Filter" providing the "f going_to F"
eberlm@66487
   753
filter for describing points x such that f(x) is in the filter F.
eberlm@66487
   754
eberlm@66480
   755
* Theory "HOL-Library.Formal_Power_Series": constants X/E/L/F have been
eberlm@66480
   756
renamed to fps_X/fps_exp/fps_ln/fps_hypergeo to avoid polluting the name
wenzelm@66472
   757
space. INCOMPATIBILITY.
wenzelm@66472
   758
wenzelm@66472
   759
* Theory "HOL-Library.FinFun" has been moved to AFP (again).
wenzelm@66472
   760
INCOMPATIBILITY.
wenzelm@66472
   761
wenzelm@66472
   762
* Theory "HOL-Library.FuncSet": some old and rarely used ASCII
wenzelm@66472
   763
replacement syntax has been removed. INCOMPATIBILITY, standard syntax
wenzelm@66472
   764
with symbols should be used instead. The subsequent commands help to
wenzelm@66472
   765
reproduce the old forms, e.g. to simplify porting old theories:
wenzelm@66472
   766
wenzelm@66472
   767
syntax (ASCII)
wenzelm@66472
   768
  "_PiE" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PIE _:_./ _)" 10)
wenzelm@66472
   769
  "_Pi"  :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PI _:_./ _)" 10)
wenzelm@66472
   770
  "_lam" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'a \<Rightarrow> 'b \<Rightarrow> ('a \<Rightarrow> 'b)"  ("(3%_:_./ _)" [0,0,3] 3)
wenzelm@66472
   771
wenzelm@66472
   772
* Theory "HOL-Library.Multiset": the simprocs on subsets operators of
wenzelm@66472
   773
multisets have been renamed:
wenzelm@66472
   774
wenzelm@66472
   775
  msetless_cancel_numerals ~> msetsubset_cancel
wenzelm@66472
   776
  msetle_cancel_numerals ~> msetsubset_eq_cancel
wenzelm@66472
   777
wenzelm@66472
   778
INCOMPATIBILITY.
wenzelm@66472
   779
lars@66481
   780
* Theory "HOL-Library.Pattern_Aliases" provides input and output syntax
lars@66481
   781
for pattern aliases as known from Haskell, Scala and ML.
blanchet@65515
   782
Andreas@66555
   783
* Theory "HOL-Library.Uprod" formalizes the type of unordered pairs.
Andreas@66555
   784
wenzelm@64898
   785
* Session HOL-Analysis: more material involving arcs, paths, covering
wenzelm@66652
   786
spaces, innessential maps, retracts, infinite products, simplicial
wenzelm@66652
   787
complexes. Baire Category theorem. Major results include the Jordan
wenzelm@66652
   788
Curve Theorem and the Great Picard Theorem.
wenzelm@66472
   789
wenzelm@66472
   790
* Session HOL-Algebra has been extended by additional lattice theory:
wenzelm@66472
   791
the Knaster-Tarski fixed point theorem and Galois Connections.
wenzelm@66472
   792
wenzelm@66472
   793
* Sessions HOL-Computational_Algebra and HOL-Number_Theory: new notions
wenzelm@66472
   794
of squarefreeness, n-th powers, and prime powers.
wenzelm@66472
   795
wenzelm@66472
   796
* Session "HOL-Computional_Algebra" covers many previously scattered
wenzelm@66472
   797
theories, notably Euclidean_Algorithm, Factorial_Ring,
wenzelm@66472
   798
Formal_Power_Series, Fraction_Field, Fundamental_Theorem_Algebra,
wenzelm@66472
   799
Normalized_Fraction, Polynomial_FPS, Polynomial, Primes. Minor
wenzelm@66472
   800
INCOMPATIBILITY.
Mathias@65027
   801
wenzelm@60331
   802
wenzelm@64844
   803
*** System ***
wenzelm@64844
   804
wenzelm@66474
   805
* Isabelle/Scala: the SQL module supports access to relational
wenzelm@66474
   806
databases, either as plain file (SQLite) or full-scale server
wenzelm@66474
   807
(PostgreSQL via local port or remote ssh connection).
wenzelm@66474
   808
wenzelm@66474
   809
* Results of "isabelle build" are recorded as SQLite database (i.e.
wenzelm@66474
   810
"Application File Format" in the sense of
wenzelm@66474
   811
https://www.sqlite.org/appfileformat.html). This allows systematic
wenzelm@66474
   812
access via operations from module Sessions.Store in Isabelle/Scala.
wenzelm@66474
   813
wenzelm@66472
   814
* System option "parallel_proofs" is 1 by default (instead of more
wenzelm@66472
   815
aggressive 2). This requires less heap space and avoids burning parallel
wenzelm@66472
   816
CPU cycles, while full subproof parallelization is enabled for repeated
wenzelm@66472
   817
builds (according to parallel_subproofs_threshold).
wenzelm@65072
   818
wenzelm@65448
   819
* System option "record_proofs" allows to change the global
wenzelm@65448
   820
Proofterm.proofs variable for a session. Regular values are are 0, 1, 2;
wenzelm@65448
   821
a negative value means the current state in the ML heap image remains
wenzelm@65448
   822
unchanged.
wenzelm@65448
   823
wenzelm@66472
   824
* Isabelle settings variable ISABELLE_SCALA_BUILD_OPTIONS has been
wenzelm@66472
   825
renamed to ISABELLE_SCALAC_OPTIONS. Rare INCOMPATIBILITY.
wenzelm@66472
   826
wenzelm@66472
   827
* Isabelle settings variables ISABELLE_WINDOWS_PLATFORM,
wenzelm@66472
   828
ISABELLE_WINDOWS_PLATFORM32, ISABELLE_WINDOWS_PLATFORM64 indicate the
wenzelm@66472
   829
native Windows platform (independently of the Cygwin installation). This
wenzelm@66472
   830
is analogous to ISABELLE_PLATFORM, ISABELLE_PLATFORM32,
wenzelm@66472
   831
ISABELLE_PLATFORM64.
wenzelm@65557
   832
wenzelm@66786
   833
* Command-line tool "isabelle build_docker" builds a Docker image from
wenzelm@66786
   834
the Isabelle application bundle for Linux. See also
wenzelm@66786
   835
https://hub.docker.com/r/makarius/isabelle
wenzelm@66786
   836
wenzelm@66473
   837
* Command-line tool "isabelle vscode_server" provides a Language Server
wenzelm@66473
   838
Protocol implementation, e.g. for the Visual Studio Code editor. It
wenzelm@66473
   839
serves as example for alternative PIDE front-ends.
wenzelm@66473
   840
wenzelm@66472
   841
* Command-line tool "isabelle imports" helps to maintain theory imports
wenzelm@66673
   842
wrt. session structure. Examples for the main Isabelle distribution:
wenzelm@66472
   843
wenzelm@66472
   844
  isabelle imports -I -a
wenzelm@66472
   845
  isabelle imports -U -a
wenzelm@66472
   846
  isabelle imports -U -i -a
wenzelm@66472
   847
  isabelle imports -M -a -d '~~/src/Benchmarks'
wenzelm@66472
   848
wenzelm@64844
   849
wenzelm@67099
   850
wenzelm@64072
   851
New in Isabelle2016-1 (December 2016)
wenzelm@64072
   852
-------------------------------------
wenzelm@62216
   853
wenzelm@62440
   854
*** General ***
wenzelm@62440
   855
wenzelm@64390
   856
* Splitter in proof methods "simp", "auto" and friends:
wenzelm@64390
   857
  - The syntax "split add" has been discontinued, use plain "split",
wenzelm@64390
   858
    INCOMPATIBILITY.
wenzelm@64390
   859
  - For situations with many conditional or case expressions, there is
wenzelm@64390
   860
    an alternative splitting strategy that can be much faster. It is
wenzelm@64390
   861
    selected by writing "split!" instead of "split". It applies safe
wenzelm@64390
   862
    introduction and elimination rules after each split rule. As a
wenzelm@64390
   863
    result the subgoal may be split into several subgoals.
wenzelm@64390
   864
wenzelm@63273
   865
* Command 'bundle' provides a local theory target to define a bundle
wenzelm@63273
   866
from the body of specification commands (such as 'declare',
wenzelm@63273
   867
'declaration', 'notation', 'lemmas', 'lemma'). For example:
wenzelm@63273
   868
wenzelm@63273
   869
bundle foo
wenzelm@63273
   870
begin
wenzelm@63273
   871
  declare a [simp]
wenzelm@63273
   872
  declare b [intro]
wenzelm@63273
   873
end
wenzelm@63272
   874
wenzelm@63282
   875
* Command 'unbundle' is like 'include', but works within a local theory
wenzelm@63282
   876
context. Unlike "context includes ... begin", the effect of 'unbundle'
wenzelm@63282
   877
on the target context persists, until different declarations are given.
wenzelm@63282
   878
wenzelm@63977
   879
* Simplified outer syntax: uniform category "name" includes long
wenzelm@63977
   880
identifiers. Former "xname" / "nameref" / "name reference" has been
wenzelm@63977
   881
discontinued.
wenzelm@63977
   882
wenzelm@63977
   883
* Embedded content (e.g. the inner syntax of types, terms, props) may be
wenzelm@63977
   884
delimited uniformly via cartouches. This works better than old-fashioned
wenzelm@63977
   885
quotes when sub-languages are nested.
wenzelm@63977
   886
wenzelm@63977
   887
* Mixfix annotations support general block properties, with syntax
wenzelm@63977
   888
"(\<open>x=a y=b z \<dots>\<close>". Notable property names are "indent", "consistent",
wenzelm@63977
   889
"unbreakable", "markup". The existing notation "(DIGITS" is equivalent
wenzelm@63977
   890
to "(\<open>indent=DIGITS\<close>". The former notation "(00" for unbreakable blocks
wenzelm@63977
   891
is superseded by "(\<open>unbreabable\<close>" --- rare INCOMPATIBILITY.
nipkow@63649
   892
wenzelm@63384
   893
* Proof method "blast" is more robust wrt. corner cases of Pure
wenzelm@63384
   894
statements without object-logic judgment.
wenzelm@63384
   895
wenzelm@63624
   896
* Commands 'prf' and 'full_prf' are somewhat more informative (again):
wenzelm@63977
   897
proof terms are reconstructed and cleaned from administrative thm nodes.
wenzelm@63977
   898
wenzelm@63977
   899
* Code generator: config option "code_timing" triggers measurements of
wenzelm@63977
   900
different phases of code generation. See src/HOL/ex/Code_Timing.thy for
wenzelm@63977
   901
examples.
wenzelm@63977
   902
wenzelm@63977
   903
* Code generator: implicits in Scala (stemming from type class
wenzelm@63977
   904
instances) are generated into companion object of corresponding type
wenzelm@63977
   905
class, to resolve some situations where ambiguities may occur.
wenzelm@63977
   906
wenzelm@64390
   907
* Solve direct: option "solve_direct_strict_warnings" gives explicit
wenzelm@64390
   908
warnings for lemma statements with trivial proofs.
haftmann@64013
   909
wenzelm@64602
   910
wenzelm@62904
   911
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@62904
   912
wenzelm@64527
   913
* More aggressive flushing of machine-generated input, according to
wenzelm@64527
   914
system option editor_generated_input_delay (in addition to existing
wenzelm@64527
   915
editor_input_delay for regular user edits). This may affect overall PIDE
wenzelm@64527
   916
reactivity and CPU usage.
wenzelm@64527
   917
wenzelm@64390
   918
* Syntactic indentation according to Isabelle outer syntax. Action
wenzelm@64390
   919
"indent-lines" (shortcut C+i) indents the current line according to
wenzelm@64390
   920
command keywords and some command substructure. Action
wenzelm@64390
   921
"isabelle.newline" (shortcut ENTER) indents the old and the new line
wenzelm@64390
   922
according to command keywords only; see also option
wenzelm@64390
   923
"jedit_indent_newline".
wenzelm@64390
   924
wenzelm@64390
   925
* Semantic indentation for unstructured proof scripts ('apply' etc.) via
wenzelm@64390
   926
number of subgoals. This requires information of ongoing document
wenzelm@64390
   927
processing and may thus lag behind, when the user is editing too
wenzelm@64390
   928
quickly; see also option "jedit_script_indent" and
wenzelm@64390
   929
"jedit_script_indent_limit".
wenzelm@64390
   930
wenzelm@64390
   931
* Refined folding mode "isabelle" based on Isar syntax: 'next' and 'qed'
wenzelm@64390
   932
are treated as delimiters for fold structure; 'begin' and 'end'
wenzelm@64390
   933
structure of theory specifications is treated as well.
wenzelm@64390
   934
wenzelm@64390
   935
* Command 'proof' provides information about proof outline with cases,
wenzelm@64390
   936
e.g. for proof methods "cases", "induct", "goal_cases".
wenzelm@64390
   937
wenzelm@64390
   938
* Completion templates for commands involving "begin ... end" blocks,
wenzelm@64390
   939
e.g. 'context', 'notepad'.
wenzelm@64390
   940
wenzelm@64390
   941
* Sidekick parser "isabelle-context" shows nesting of context blocks
wenzelm@64390
   942
according to 'begin' and 'end' structure.
wenzelm@64390
   943
wenzelm@63977
   944
* Highlighting of entity def/ref positions wrt. cursor.
wenzelm@63977
   945
wenzelm@63977
   946
* Action "isabelle.select-entity" (shortcut CS+ENTER) selects all
wenzelm@64514
   947
occurrences of the formal entity at the caret position. This facilitates
wenzelm@63977
   948
systematic renaming.
wenzelm@63977
   949
wenzelm@63977
   950
* PIDE document markup works across multiple Isar commands, e.g. the
wenzelm@63977
   951
results established at the end of a proof are properly identified in the
wenzelm@63977
   952
theorem statement.
wenzelm@63977
   953
wenzelm@63977
   954
* Cartouche abbreviations work both for " and ` to accomodate typical
wenzelm@63977
   955
situations where old ASCII notation may be updated.
wenzelm@63977
   956
wenzelm@63875
   957
* Dockable window "Symbols" also provides access to 'abbrevs' from the
wenzelm@63875
   958
outer syntax of the current theory buffer. This provides clickable
wenzelm@63875
   959
syntax templates, including entries with empty abbrevs name (which are
wenzelm@63875
   960
inaccessible via keyboard completion).
wenzelm@63875
   961
wenzelm@63022
   962
* IDE support for the Isabelle/Pure bootstrap process, with the
wenzelm@63022
   963
following independent stages:
wenzelm@63022
   964
wenzelm@63022
   965
  src/Pure/ROOT0.ML
wenzelm@63022
   966
  src/Pure/ROOT.ML
wenzelm@63022
   967
  src/Pure/Pure.thy
wenzelm@63022
   968
  src/Pure/ML_Bootstrap.thy
wenzelm@63022
   969
wenzelm@63022
   970
The ML ROOT files act like quasi-theories in the context of theory
wenzelm@63022
   971
ML_Bootstrap: this allows continuous checking of all loaded ML files.
wenzelm@63022
   972
The theory files are presented with a modified header to import Pure
wenzelm@63022
   973
from the running Isabelle instance. Results from changed versions of
wenzelm@63022
   974
each stage are *not* propagated to the next stage, and isolated from the
wenzelm@63022
   975
actual Isabelle/Pure that runs the IDE itself. The sequential
wenzelm@63308
   976
dependencies of the above files are only observed for batch build.
wenzelm@62904
   977
wenzelm@63977
   978
* Isabelle/ML and Standard ML files are presented in Sidekick with the
wenzelm@63977
   979
tree structure of section headings: this special comment format is
wenzelm@63977
   980
described in "implementation" chapter 0, e.g. (*** section ***).
wenzelm@63461
   981
wenzelm@63581
   982
* Additional abbreviations for syntactic completion may be specified
wenzelm@63871
   983
within the theory header as 'abbrevs'. The theory syntax for 'keywords'
wenzelm@63871
   984
has been simplified accordingly: optional abbrevs need to go into the
wenzelm@63871
   985
new 'abbrevs' section.
wenzelm@63871
   986
wenzelm@63871
   987
* Global abbreviations via $ISABELLE_HOME/etc/abbrevs and
wenzelm@63871
   988
$ISABELLE_HOME_USER/etc/abbrevs are no longer supported. Minor
wenzelm@63871
   989
INCOMPATIBILITY, use 'abbrevs' within theory header instead.
wenzelm@63579
   990
wenzelm@64390
   991
* Action "isabelle.keymap-merge" asks the user to resolve pending
wenzelm@64390
   992
Isabelle keymap changes that are in conflict with the current jEdit
wenzelm@64390
   993
keymap; non-conflicting changes are always applied implicitly. This
wenzelm@64390
   994
action is automatically invoked on Isabelle/jEdit startup and thus
wenzelm@64390
   995
increases chances that users see new keyboard shortcuts when re-using
wenzelm@64390
   996
old keymaps.
wenzelm@64390
   997
wenzelm@63675
   998
* ML and document antiquotations for file-systems paths are more uniform
wenzelm@63675
   999
and diverse:
wenzelm@63675
  1000
wenzelm@63675
  1001
  @{path NAME}   -- no file-system check
wenzelm@63675
  1002
  @{file NAME}   -- check for plain file
wenzelm@63675
  1003
  @{dir NAME}    -- check for directory
wenzelm@63675
  1004
wenzelm@63675
  1005
Minor INCOMPATIBILITY, former uses of @{file} and @{file_unchecked} may
wenzelm@63675
  1006
have to be changed.
wenzelm@63669
  1007
wenzelm@63669
  1008
wenzelm@63977
  1009
*** Document preparation ***
wenzelm@63977
  1010
wenzelm@63977
  1011
* New symbol \<circle>, e.g. for temporal operator.
wenzelm@63977
  1012
wenzelm@64073
  1013
* New document and ML antiquotation @{locale} for locales, similar to
wenzelm@64073
  1014
existing antiquotation @{class}.
wenzelm@64073
  1015
wenzelm@63977
  1016
* Mixfix annotations support delimiters like \<^control>\<open>cartouche\<close> --
wenzelm@63977
  1017
this allows special forms of document output.
wenzelm@63977
  1018
wenzelm@63977
  1019
* Raw LaTeX output now works via \<^latex>\<open>...\<close> instead of raw control
wenzelm@63977
  1020
symbol \<^raw:...>. INCOMPATIBILITY, notably for LaTeXsugar.thy and its
wenzelm@63977
  1021
derivatives.
wenzelm@63977
  1022
wenzelm@63977
  1023
* \<^raw:...> symbols are no longer supported.
wenzelm@63977
  1024
wenzelm@63977
  1025
* Old 'header' command is no longer supported (legacy since
wenzelm@63977
  1026
Isabelle2015).
wenzelm@63977
  1027
wenzelm@63977
  1028
wenzelm@62312
  1029
*** Isar ***
wenzelm@62312
  1030
wenzelm@63180
  1031
* Many specification elements support structured statements with 'if' /
wenzelm@63180
  1032
'for' eigen-context, e.g. 'axiomatization', 'abbreviation',
wenzelm@63180
  1033
'definition', 'inductive', 'function'.
wenzelm@63180
  1034
wenzelm@63094
  1035
* Toplevel theorem statements support eigen-context notation with 'if' /
wenzelm@63285
  1036
'for' (in postfix), which corresponds to 'assumes' / 'fixes' in the
wenzelm@63094
  1037
traditional long statement form (in prefix). Local premises are called
wenzelm@63094
  1038
"that" or "assms", respectively. Empty premises are *not* bound in the
wenzelm@63094
  1039
context: INCOMPATIBILITY.
wenzelm@63094
  1040
wenzelm@63043
  1041
* Command 'define' introduces a local (non-polymorphic) definition, with
wenzelm@63043
  1042
optional abstraction over local parameters. The syntax resembles
wenzelm@63047
  1043
'definition' and 'obtain'. It fits better into the Isar language than
wenzelm@63047
  1044
old 'def', which is now a legacy feature.
wenzelm@63043
  1045
wenzelm@63059
  1046
* Command 'obtain' supports structured statements with 'if' / 'for'
wenzelm@63059
  1047
context.
wenzelm@63059
  1048
wenzelm@62312
  1049
* Command '\<proof>' is an alias for 'sorry', with different
wenzelm@62312
  1050
typesetting. E.g. to produce proof holes in examples and documentation.
wenzelm@62216
  1051
wenzelm@63977
  1052
* The defining position of a literal fact \<open>prop\<close> is maintained more
wenzelm@63977
  1053
carefully, and made accessible as hyperlink in the Prover IDE.
wenzelm@63977
  1054
wenzelm@63977
  1055
* Commands 'finally' and 'ultimately' used to expose the result as
wenzelm@63977
  1056
literal fact: this accidental behaviour has been discontinued. Rare
wenzelm@63977
  1057
INCOMPATIBILITY, use more explicit means to refer to facts in Isar.
wenzelm@63977
  1058
wenzelm@63977
  1059
* Command 'axiomatization' has become more restrictive to correspond
wenzelm@63977
  1060
better to internal axioms as singleton facts with mandatory name. Minor
wenzelm@63977
  1061
INCOMPATIBILITY.
wenzelm@62939
  1062
wenzelm@63259
  1063
* Proof methods may refer to the main facts via the dynamic fact
wenzelm@63259
  1064
"method_facts". This is particularly useful for Eisbach method
wenzelm@63259
  1065
definitions.
wenzelm@63259
  1066
wenzelm@63528
  1067
* Proof method "use" allows to modify the main facts of a given method
wenzelm@63528
  1068
expression, e.g.
wenzelm@63259
  1069
wenzelm@63259
  1070
  (use facts in simp)
wenzelm@63259
  1071
  (use facts in \<open>simp add: ...\<close>)
wenzelm@63259
  1072
wenzelm@63977
  1073
* The old proof method "default" has been removed (legacy since
wenzelm@63977
  1074
Isabelle2016). INCOMPATIBILITY, use "standard" instead.
wenzelm@63977
  1075
wenzelm@62216
  1076
haftmann@63165
  1077
*** Pure ***
haftmann@63165
  1078
wenzelm@63977
  1079
* Pure provides basic versions of proof methods "simp" and "simp_all"
wenzelm@63977
  1080
that only know about meta-equality (==). Potential INCOMPATIBILITY in
wenzelm@63977
  1081
theory imports that merge Pure with e.g. Main of Isabelle/HOL: the order
wenzelm@63977
  1082
is relevant to avoid confusion of Pure.simp vs. HOL.simp.
wenzelm@63977
  1083
wenzelm@63977
  1084
* The command 'unfolding' and proof method "unfold" include a second
wenzelm@63977
  1085
stage where given equations are passed through the attribute "abs_def"
wenzelm@63977
  1086
before rewriting. This ensures that definitions are fully expanded,
wenzelm@63977
  1087
regardless of the actual parameters that are provided. Rare
wenzelm@63977
  1088
INCOMPATIBILITY in some corner cases: use proof method (simp only:)
wenzelm@63977
  1089
instead, or declare [[unfold_abs_def = false]] in the proof context.
wenzelm@63977
  1090
wenzelm@63977
  1091
* Type-inference improves sorts of newly introduced type variables for
wenzelm@63977
  1092
the object-logic, using its base sort (i.e. HOL.type for Isabelle/HOL).
wenzelm@63977
  1093
Thus terms like "f x" or "\<And>x. P x" without any further syntactic context
wenzelm@63977
  1094
produce x::'a::type in HOL instead of x::'a::{} in Pure. Rare
wenzelm@63977
  1095
INCOMPATIBILITY, need to provide explicit type constraints for Pure
wenzelm@63977
  1096
types where this is really intended.
haftmann@63350
  1097
haftmann@63165
  1098
blanchet@62327
  1099
*** HOL ***
blanchet@62327
  1100
wenzelm@63977
  1101
* New proof method "argo" using the built-in Argo solver based on SMT
wenzelm@63977
  1102
technology. The method can be used to prove goals of quantifier-free
wenzelm@63977
  1103
propositional logic, goals based on a combination of quantifier-free
wenzelm@63977
  1104
propositional logic with equality, and goals based on a combination of
wenzelm@63977
  1105
quantifier-free propositional logic with linear real arithmetic
wenzelm@63977
  1106
including min/max/abs. See HOL/ex/Argo_Examples.thy for examples.
wenzelm@63977
  1107
blanchet@66616
  1108
* The new "nunchaku" command integrates the Nunchaku model finder. The
wenzelm@64390
  1109
tool is experimental. See ~~/src/HOL/Nunchaku/Nunchaku.thy for details.
wenzelm@64390
  1110
wenzelm@63977
  1111
* Metis: The problem encoding has changed very slightly. This might
blanchet@63785
  1112
break existing proofs. INCOMPATIBILITY.
blanchet@63785
  1113
blanchet@63116
  1114
* Sledgehammer:
lp15@63967
  1115
  - The MaSh relevance filter is now faster than before.
blanchet@63116
  1116
  - Produce syntactically correct Vampire 4.0 problem files.
blanchet@63116
  1117
blanchet@62327
  1118
* (Co)datatype package:
blanchet@62693
  1119
  - New commands for defining corecursive functions and reasoning about
blanchet@62693
  1120
    them in "~~/src/HOL/Library/BNF_Corec.thy": 'corec', 'corecursive',
blanchet@62693
  1121
    'friend_of_corec', and 'corecursion_upto'; and 'corec_unique' proof
blanchet@62842
  1122
    method. See 'isabelle doc corec'.
wenzelm@63977
  1123
  - The predicator :: ('a \<Rightarrow> bool) \<Rightarrow> 'a F \<Rightarrow> bool is now a first-class
blanchet@63855
  1124
    citizen in bounded natural functors.
blanchet@62693
  1125
  - 'primrec' now allows nested calls through the predicator in addition
blanchet@62327
  1126
    to the map function.
blanchet@63855
  1127
  - 'bnf' automatically discharges reflexive proof obligations.
blanchet@62693
  1128
  - 'bnf' outputs a slightly modified proof obligation expressing rel in
traytel@62332
  1129
       terms of map and set
blanchet@63855
  1130
       (not giving a specification for rel makes this one reflexive).
blanchet@62693
  1131
  - 'bnf' outputs a new proof obligation expressing pred in terms of set
blanchet@63855
  1132
       (not giving a specification for pred makes this one reflexive).
blanchet@63855
  1133
    INCOMPATIBILITY: manual 'bnf' declarations may need adjustment.
blanchet@62335
  1134
  - Renamed lemmas:
blanchet@62335
  1135
      rel_prod_apply ~> rel_prod_inject
blanchet@62335
  1136
      pred_prod_apply ~> pred_prod_inject
blanchet@62335
  1137
    INCOMPATIBILITY.
blanchet@62536
  1138
  - The "size" plugin has been made compatible again with locales.
blanchet@63855
  1139
  - The theorems about "rel" and "set" may have a slightly different (but
blanchet@63855
  1140
    equivalent) form.
blanchet@63855
  1141
    INCOMPATIBILITY.
blanchet@62327
  1142
wenzelm@63977
  1143
* The 'coinductive' command produces a proper coinduction rule for
wenzelm@63977
  1144
mutual coinductive predicates. This new rule replaces the old rule,
wenzelm@63977
  1145
which exposed details of the internal fixpoint construction and was
wenzelm@63977
  1146
hard to use. INCOMPATIBILITY.
wenzelm@63977
  1147
wenzelm@63977
  1148
* New abbreviations for negated existence (but not bounded existence):
wenzelm@63977
  1149
wenzelm@63977
  1150
  \<nexists>x. P x \<equiv> \<not> (\<exists>x. P x)
wenzelm@63977
  1151
  \<nexists>!x. P x \<equiv> \<not> (\<exists>!x. P x)
wenzelm@63977
  1152
wenzelm@63977
  1153
* The print mode "HOL" for ASCII syntax of binders "!", "?", "?!", "@"
wenzelm@63977
  1154
has been removed for output. It is retained for input only, until it is
wenzelm@63977
  1155
eliminated altogether.
wenzelm@63977
  1156
wenzelm@63977
  1157
* The unique existence quantifier no longer provides 'binder' syntax,
wenzelm@63977
  1158
but uses syntax translations (as for bounded unique existence). Thus
wenzelm@63977
  1159
iterated quantification \<exists>!x y. P x y with its slightly confusing
wenzelm@63977
  1160
sequential meaning \<exists>!x. \<exists>!y. P x y is no longer possible. Instead,
wenzelm@63977
  1161
pattern abstraction admits simultaneous unique existence \<exists>!(x, y). P x y
wenzelm@63977
  1162
(analogous to existing notation \<exists>!(x, y)\<in>A. P x y). Potential
wenzelm@63977
  1163
INCOMPATIBILITY in rare situations.
wenzelm@63977
  1164
wenzelm@63977
  1165
* Conventional syntax "%(). t" for unit abstractions. Slight syntactic
wenzelm@63977
  1166
INCOMPATIBILITY.
wenzelm@63977
  1167
wenzelm@64390
  1168
* Renamed constants and corresponding theorems:
wenzelm@64390
  1169
wenzelm@64390
  1170
    setsum ~> sum
wenzelm@64390
  1171
    setprod ~> prod
wenzelm@64390
  1172
    listsum ~> sum_list
wenzelm@64390
  1173
    listprod ~> prod_list
wenzelm@64390
  1174
wenzelm@64390
  1175
INCOMPATIBILITY.
wenzelm@64390
  1176
wenzelm@64390
  1177
* Sligthly more standardized theorem names:
wenzelm@64390
  1178
    sgn_times ~> sgn_mult
wenzelm@64390
  1179
    sgn_mult' ~> Real_Vector_Spaces.sgn_mult
wenzelm@64390
  1180
    divide_zero_left ~> div_0
wenzelm@64390
  1181
    zero_mod_left ~> mod_0
wenzelm@64390
  1182
    divide_zero ~> div_by_0
wenzelm@64390
  1183
    divide_1 ~> div_by_1
wenzelm@64390
  1184
    nonzero_mult_divide_cancel_left ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1185
    div_mult_self1_is_id ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1186
    nonzero_mult_divide_cancel_right ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1187
    div_mult_self2_is_id ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1188
    is_unit_divide_mult_cancel_left ~> is_unit_div_mult_cancel_left
wenzelm@64390
  1189
    is_unit_divide_mult_cancel_right ~> is_unit_div_mult_cancel_right
wenzelm@64390
  1190
    mod_div_equality ~> div_mult_mod_eq
wenzelm@64390
  1191
    mod_div_equality2 ~> mult_div_mod_eq
wenzelm@64390
  1192
    mod_div_equality3 ~> mod_div_mult_eq
wenzelm@64390
  1193
    mod_div_equality4 ~> mod_mult_div_eq
wenzelm@64390
  1194
    minus_div_eq_mod ~> minus_div_mult_eq_mod
wenzelm@64390
  1195
    minus_div_eq_mod2 ~> minus_mult_div_eq_mod
wenzelm@64390
  1196
    minus_mod_eq_div ~> minus_mod_eq_div_mult
wenzelm@64390
  1197
    minus_mod_eq_div2 ~> minus_mod_eq_mult_div
wenzelm@64390
  1198
    div_mod_equality' ~> minus_mod_eq_div_mult [symmetric]
wenzelm@64390
  1199
    mod_div_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1200
    zmod_zdiv_equality ~> mult_div_mod_eq [symmetric]
wenzelm@64390
  1201
    zmod_zdiv_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1202
    Divides.mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1203
    mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1204
    zmult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1205
    div_1 ~> div_by_Suc_0
wenzelm@64390
  1206
    mod_1 ~> mod_by_Suc_0
wenzelm@64390
  1207
INCOMPATIBILITY.
wenzelm@64390
  1208
wenzelm@64390
  1209
* New type class "idom_abs_sgn" specifies algebraic properties
wenzelm@64390
  1210
of sign and absolute value functions.  Type class "sgn_if" has
wenzelm@64390
  1211
disappeared.  Slight INCOMPATIBILITY.
wenzelm@64390
  1212
wenzelm@64390
  1213
* Dedicated syntax LENGTH('a) for length of types.
wenzelm@64390
  1214
wenzelm@63977
  1215
* Characters (type char) are modelled as finite algebraic type
wenzelm@63977
  1216
corresponding to {0..255}.
wenzelm@63977
  1217
wenzelm@63977
  1218
  - Logical representation:
wenzelm@63977
  1219
    * 0 is instantiated to the ASCII zero character.
wenzelm@63977
  1220
    * All other characters are represented as "Char n"
wenzelm@63977
  1221
      with n being a raw numeral expression less than 256.
wenzelm@63977
  1222
    * Expressions of the form "Char n" with n greater than 255
wenzelm@63977
  1223
      are non-canonical.
wenzelm@63977
  1224
  - Printing and parsing:
wenzelm@63977
  1225
    * Printable characters are printed and parsed as "CHR ''\<dots>''"
wenzelm@63977
  1226
      (as before).
wenzelm@63977
  1227
    * The ASCII zero character is printed and parsed as "0".
wenzelm@63977
  1228
    * All other canonical characters are printed as "CHR 0xXX"
wenzelm@63977
  1229
      with XX being the hexadecimal character code.  "CHR n"
wenzelm@63977
  1230
      is parsable for every numeral expression n.
wenzelm@63977
  1231
    * Non-canonical characters have no special syntax and are
wenzelm@63977
  1232
      printed as their logical representation.
wenzelm@63977
  1233
  - Explicit conversions from and to the natural numbers are
wenzelm@63977
  1234
    provided as char_of_nat, nat_of_char (as before).
wenzelm@63977
  1235
  - The auxiliary nibble type has been discontinued.
wenzelm@63977
  1236
wenzelm@63977
  1237
INCOMPATIBILITY.
wenzelm@63977
  1238
wenzelm@63977
  1239
* Type class "div" with operation "mod" renamed to type class "modulo"
wenzelm@63977
  1240
with operation "modulo", analogously to type class "divide". This
wenzelm@63977
  1241
eliminates the need to qualify any of those names in the presence of
wenzelm@63977
  1242
infix "mod" syntax. INCOMPATIBILITY.
wenzelm@63977
  1243
wenzelm@63979
  1244
* Statements and proofs of Knaster-Tarski fixpoint combinators lfp/gfp
wenzelm@63979
  1245
have been clarified. The fixpoint properties are lfp_fixpoint, its
wenzelm@63979
  1246
symmetric lfp_unfold (as before), and the duals for gfp. Auxiliary items
wenzelm@63979
  1247
for the proof (lfp_lemma2 etc.) are no longer exported, but can be
wenzelm@63979
  1248
easily recovered by composition with eq_refl. Minor INCOMPATIBILITY.
wenzelm@63979
  1249
wenzelm@63977
  1250
* Constant "surj" is a mere input abbreviation, to avoid hiding an
wenzelm@63977
  1251
equation in term output. Minor INCOMPATIBILITY.
wenzelm@63977
  1252
wenzelm@63977
  1253
* Command 'code_reflect' accepts empty constructor lists for datatypes,
wenzelm@63977
  1254
which renders those abstract effectively.
wenzelm@63977
  1255
wenzelm@63977
  1256
* Command 'export_code' checks given constants for abstraction
wenzelm@63977
  1257
violations: a small guarantee that given constants specify a safe
wenzelm@63977
  1258
interface for the generated code.
wenzelm@63977
  1259
wenzelm@63977
  1260
* Code generation for Scala: ambiguous implicts in class diagrams are
wenzelm@63977
  1261
spelt out explicitly.
wenzelm@63977
  1262
wenzelm@63977
  1263
* Static evaluators (Code_Evaluation.static_* in Isabelle/ML) rely on
wenzelm@63977
  1264
explicitly provided auxiliary definitions for required type class
wenzelm@64390
  1265
dictionaries rather than half-working magic. INCOMPATIBILITY, see the
wenzelm@64390
  1266
tutorial on code generation for details.
wenzelm@64390
  1267
wenzelm@64390
  1268
* Theory Set_Interval: substantial new theorems on indexed sums and
wenzelm@64390
  1269
products.
wenzelm@63977
  1270
wenzelm@63977
  1271
* Locale bijection establishes convenient default simp rules such as
wenzelm@63977
  1272
"inv f (f a) = a" for total bijections.
wenzelm@63977
  1273
wenzelm@63977
  1274
* Abstract locales semigroup, abel_semigroup, semilattice,
wenzelm@63977
  1275
semilattice_neutr, ordering, ordering_top, semilattice_order,
wenzelm@63977
  1276
semilattice_neutr_order, comm_monoid_set, semilattice_set,
wenzelm@63977
  1277
semilattice_neutr_set, semilattice_order_set,
wenzelm@63977
  1278
semilattice_order_neutr_set monoid_list, comm_monoid_list,
wenzelm@63977
  1279
comm_monoid_list_set, comm_monoid_mset, comm_monoid_fun use boldified
wenzelm@63977
  1280
syntax uniformly that does not clash with corresponding global syntax.
wenzelm@63977
  1281
INCOMPATIBILITY.
wenzelm@63977
  1282
wenzelm@63977
  1283
* Former locale lifting_syntax is now a bundle, which is easier to
wenzelm@63977
  1284
include in a local context or theorem statement, e.g. "context includes
wenzelm@63977
  1285
lifting_syntax begin ... end". Minor INCOMPATIBILITY.
wenzelm@63977
  1286
wenzelm@63807
  1287
* Some old / obsolete theorems have been renamed / removed, potential
wenzelm@63807
  1288
INCOMPATIBILITY.
wenzelm@63807
  1289
wenzelm@63807
  1290
  nat_less_cases  --  removed, use linorder_cases instead
wenzelm@63807
  1291
  inv_image_comp  --  removed, use image_inv_f_f instead
wenzelm@63807
  1292
  image_surj_f_inv_f  ~>  image_f_inv_f
wenzelm@63113
  1293
Mathias@63456
  1294
* Some theorems about groups and orders have been generalised from
Mathias@63456
  1295
  groups to semi-groups that are also monoids:
Mathias@63456
  1296
    le_add_same_cancel1
Mathias@63456
  1297
    le_add_same_cancel2
Mathias@63456
  1298
    less_add_same_cancel1
Mathias@63456
  1299
    less_add_same_cancel2
Mathias@63456
  1300
    add_le_same_cancel1
Mathias@63456
  1301
    add_le_same_cancel2
Mathias@63456
  1302
    add_less_same_cancel1
Mathias@63456
  1303
    add_less_same_cancel2
Mathias@63456
  1304
Mathias@63456
  1305
* Some simplifications theorems about rings have been removed, since
Mathias@63456
  1306
  superseeded by a more general version:
Mathias@63456
  1307
    less_add_cancel_left_greater_zero ~> less_add_same_cancel1
Mathias@63456
  1308
    less_add_cancel_right_greater_zero ~> less_add_same_cancel2
Mathias@63456
  1309
    less_eq_add_cancel_left_greater_eq_zero ~> le_add_same_cancel1
Mathias@63456
  1310
    less_eq_add_cancel_right_greater_eq_zero ~> le_add_same_cancel2
Mathias@63456
  1311
    less_eq_add_cancel_left_less_eq_zero ~> add_le_same_cancel1
Mathias@63456
  1312
    less_eq_add_cancel_right_less_eq_zero ~> add_le_same_cancel2
Mathias@63456
  1313
    less_add_cancel_left_less_zero ~> add_less_same_cancel1
Mathias@63456
  1314
    less_add_cancel_right_less_zero ~> add_less_same_cancel2
Mathias@63456
  1315
INCOMPATIBILITY.
Mathias@63456
  1316
wenzelm@62407
  1317
* Renamed split_if -> if_split and split_if_asm -> if_split_asm to
wenzelm@62407
  1318
resemble the f.split naming convention, INCOMPATIBILITY.
nipkow@62396
  1319
wenzelm@63977
  1320
* Added class topological_monoid.
wenzelm@63977
  1321
wenzelm@64391
  1322
* The following theorems have been renamed:
wenzelm@64391
  1323
nipkow@64457
  1324
  setsum_left_distrib ~> sum_distrib_right
nipkow@64457
  1325
  setsum_right_distrib ~> sum_distrib_left
wenzelm@64391
  1326
wenzelm@64391
  1327
INCOMPATIBILITY.
wenzelm@64391
  1328
wenzelm@64391
  1329
* Compound constants INFIMUM and SUPREMUM are mere abbreviations now.
wenzelm@64391
  1330
INCOMPATIBILITY.
wenzelm@64391
  1331
wenzelm@64391
  1332
* "Gcd (f ` A)" and "Lcm (f ` A)" are printed with optional
wenzelm@64391
  1333
comprehension-like syntax analogously to "Inf (f ` A)" and "Sup (f `
wenzelm@64391
  1334
A)".
wenzelm@64391
  1335
wenzelm@64391
  1336
* Class semiring_Lcd merged into semiring_Gcd. INCOMPATIBILITY.
wenzelm@64391
  1337
wenzelm@64391
  1338
* The type class ordered_comm_monoid_add is now called
wenzelm@64391
  1339
ordered_cancel_comm_monoid_add. A new type class ordered_comm_monoid_add
wenzelm@64391
  1340
is introduced as the combination of ordered_ab_semigroup_add +
wenzelm@64391
  1341
comm_monoid_add. INCOMPATIBILITY.
wenzelm@64391
  1342
wenzelm@64391
  1343
* Introduced the type classes canonically_ordered_comm_monoid_add and
wenzelm@64391
  1344
dioid.
wenzelm@64391
  1345
wenzelm@64391
  1346
* Introduced the type class ordered_ab_semigroup_monoid_add_imp_le. When
wenzelm@64391
  1347
instantiating linordered_semiring_strict and ordered_ab_group_add, an
wenzelm@64391
  1348
explicit instantiation of ordered_ab_semigroup_monoid_add_imp_le might
wenzelm@64391
  1349
be required. INCOMPATIBILITY.
nipkow@63117
  1350
haftmann@62348
  1351
* Dropped various legacy fact bindings, whose replacements are often
haftmann@62348
  1352
of a more general type also:
haftmann@62348
  1353
  lcm_left_commute_nat ~> lcm.left_commute
haftmann@62348
  1354
  lcm_left_commute_int ~> lcm.left_commute
haftmann@62348
  1355
  gcd_left_commute_nat ~> gcd.left_commute
haftmann@62348
  1356
  gcd_left_commute_int ~> gcd.left_commute
haftmann@62348
  1357
  gcd_greatest_iff_nat ~> gcd_greatest_iff
haftmann@62348
  1358
  gcd_greatest_iff_int ~> gcd_greatest_iff
haftmann@62348
  1359
  coprime_dvd_mult_nat ~> coprime_dvd_mult
haftmann@62348
  1360
  coprime_dvd_mult_int ~> coprime_dvd_mult
haftmann@62348
  1361
  zpower_numeral_even ~> power_numeral_even
haftmann@62348
  1362
  gcd_mult_cancel_nat ~> gcd_mult_cancel
haftmann@62348
  1363
  gcd_mult_cancel_int ~> gcd_mult_cancel
haftmann@62348
  1364
  div_gcd_coprime_nat ~> div_gcd_coprime
haftmann@62348
  1365
  div_gcd_coprime_int ~> div_gcd_coprime
haftmann@62348
  1366
  zpower_numeral_odd ~> power_numeral_odd
haftmann@62348
  1367
  zero_less_int_conv ~> of_nat_0_less_iff
haftmann@62348
  1368
  gcd_greatest_nat ~> gcd_greatest
haftmann@62348
  1369
  gcd_greatest_int ~> gcd_greatest
haftmann@62348
  1370
  coprime_mult_nat ~> coprime_mult
haftmann@62348
  1371
  coprime_mult_int ~> coprime_mult
haftmann@62348
  1372
  lcm_commute_nat ~> lcm.commute
haftmann@62348
  1373
  lcm_commute_int ~> lcm.commute
haftmann@62348
  1374
  int_less_0_conv ~> of_nat_less_0_iff
haftmann@62348
  1375
  gcd_commute_nat ~> gcd.commute
haftmann@62348
  1376
  gcd_commute_int ~> gcd.commute
haftmann@62348
  1377
  Gcd_insert_nat ~> Gcd_insert
haftmann@62348
  1378
  Gcd_insert_int ~> Gcd_insert
haftmann@62348
  1379
  of_int_int_eq ~> of_int_of_nat_eq
haftmann@62348
  1380
  lcm_least_nat ~> lcm_least
haftmann@62348
  1381
  lcm_least_int ~> lcm_least
haftmann@62348
  1382
  lcm_assoc_nat ~> lcm.assoc
haftmann@62348
  1383
  lcm_assoc_int ~> lcm.assoc
haftmann@62348
  1384
  int_le_0_conv ~> of_nat_le_0_iff
haftmann@62348
  1385
  int_eq_0_conv ~> of_nat_eq_0_iff
haftmann@62348
  1386
  Gcd_empty_nat ~> Gcd_empty
haftmann@62348
  1387
  Gcd_empty_int ~> Gcd_empty
haftmann@62348
  1388
  gcd_assoc_nat ~> gcd.assoc
haftmann@62348
  1389
  gcd_assoc_int ~> gcd.assoc
haftmann@62348
  1390
  zero_zle_int ~> of_nat_0_le_iff
haftmann@62348
  1391
  lcm_dvd2_nat ~> dvd_lcm2
haftmann@62348
  1392
  lcm_dvd2_int ~> dvd_lcm2
haftmann@62348
  1393
  lcm_dvd1_nat ~> dvd_lcm1
haftmann@62348
  1394
  lcm_dvd1_int ~> dvd_lcm1
haftmann@62348
  1395
  gcd_zero_nat ~> gcd_eq_0_iff
haftmann@62348
  1396
  gcd_zero_int ~> gcd_eq_0_iff
haftmann@62348
  1397
  gcd_dvd2_nat ~> gcd_dvd2
haftmann@62348
  1398
  gcd_dvd2_int ~> gcd_dvd2
haftmann@62348
  1399
  gcd_dvd1_nat ~> gcd_dvd1
haftmann@62348
  1400
  gcd_dvd1_int ~> gcd_dvd1
haftmann@62348
  1401
  int_numeral ~> of_nat_numeral
haftmann@62348
  1402
  lcm_ac_nat ~> ac_simps
haftmann@62348
  1403
  lcm_ac_int ~> ac_simps
haftmann@62348
  1404
  gcd_ac_nat ~> ac_simps
haftmann@62348
  1405
  gcd_ac_int ~> ac_simps
haftmann@62348
  1406
  abs_int_eq ~> abs_of_nat
haftmann@62348
  1407
  zless_int ~> of_nat_less_iff
haftmann@62348
  1408
  zdiff_int ~> of_nat_diff
haftmann@62348
  1409
  zadd_int ~> of_nat_add
haftmann@62348
  1410
  int_mult ~> of_nat_mult
haftmann@62348
  1411
  int_Suc ~> of_nat_Suc
haftmann@62348
  1412
  inj_int ~> inj_of_nat
haftmann@62348
  1413
  int_1 ~> of_nat_1
haftmann@62348
  1414
  int_0 ~> of_nat_0
haftmann@62353
  1415
  Lcm_empty_nat ~> Lcm_empty
haftmann@62353
  1416
  Lcm_empty_int ~> Lcm_empty
haftmann@62353
  1417
  Lcm_insert_nat ~> Lcm_insert
haftmann@62353
  1418
  Lcm_insert_int ~> Lcm_insert
haftmann@62353
  1419
  comp_fun_idem_gcd_nat ~> comp_fun_idem_gcd
haftmann@62353
  1420
  comp_fun_idem_gcd_int ~> comp_fun_idem_gcd
haftmann@62353
  1421
  comp_fun_idem_lcm_nat ~> comp_fun_idem_lcm
haftmann@62353
  1422
  comp_fun_idem_lcm_int ~> comp_fun_idem_lcm
haftmann@62353
  1423
  Lcm_eq_0 ~> Lcm_eq_0_I
haftmann@62353
  1424
  Lcm0_iff ~> Lcm_0_iff
haftmann@62353
  1425
  Lcm_dvd_int ~> Lcm_least
haftmann@62353
  1426
  divides_mult_nat ~> divides_mult
haftmann@62353
  1427
  divides_mult_int ~> divides_mult
haftmann@62353
  1428
  lcm_0_nat ~> lcm_0_right
haftmann@62353
  1429
  lcm_0_int ~> lcm_0_right
haftmann@62353
  1430
  lcm_0_left_nat ~> lcm_0_left
haftmann@62353
  1431
  lcm_0_left_int ~> lcm_0_left
haftmann@62353
  1432
  dvd_gcd_D1_nat ~> dvd_gcdD1
haftmann@62353
  1433
  dvd_gcd_D1_int ~> dvd_gcdD1
haftmann@62353
  1434
  dvd_gcd_D2_nat ~> dvd_gcdD2
haftmann@62353
  1435
  dvd_gcd_D2_int ~> dvd_gcdD2
haftmann@62353
  1436
  coprime_dvd_mult_iff_nat ~> coprime_dvd_mult_iff
haftmann@62353
  1437
  coprime_dvd_mult_iff_int ~> coprime_dvd_mult_iff
haftmann@62348
  1438
  realpow_minus_mult ~> power_minus_mult
haftmann@62348
  1439
  realpow_Suc_le_self ~> power_Suc_le_self
haftmann@62353
  1440
  dvd_Gcd, dvd_Gcd_nat, dvd_Gcd_int removed in favour of Gcd_greatest
haftmann@62347
  1441
INCOMPATIBILITY.
haftmann@62347
  1442
lp15@63967
  1443
* Renamed HOL/Quotient_Examples/FSet.thy to
wenzelm@63977
  1444
HOL/Quotient_Examples/Quotient_FSet.thy INCOMPATIBILITY.
wenzelm@63977
  1445
wenzelm@64390
  1446
* Session HOL-Library: theory FinFun bundles "finfun_syntax" and
wenzelm@64390
  1447
"no_finfun_syntax" allow to control optional syntax in local contexts;
wenzelm@64390
  1448
this supersedes former theory FinFun_Syntax. INCOMPATIBILITY, e.g. use
wenzelm@64390
  1449
"unbundle finfun_syntax" to imitate import of
wenzelm@64390
  1450
"~~/src/HOL/Library/FinFun_Syntax".
wenzelm@64390
  1451
wenzelm@64390
  1452
* Session HOL-Library: theory Multiset_Permutations (executably) defines
wenzelm@64390
  1453
the set of permutations of a given set or multiset, i.e. the set of all
wenzelm@64390
  1454
lists that contain every element of the carrier (multi-)set exactly
wenzelm@64390
  1455
once.
wenzelm@64390
  1456
wenzelm@64390
  1457
* Session HOL-Library: multiset membership is now expressed using
wenzelm@64390
  1458
set_mset rather than count.
wenzelm@64390
  1459
wenzelm@64390
  1460
  - Expressions "count M a > 0" and similar simplify to membership
wenzelm@64390
  1461
    by default.
wenzelm@64390
  1462
wenzelm@64390
  1463
  - Converting between "count M a = 0" and non-membership happens using
wenzelm@64390
  1464
    equations count_eq_zero_iff and not_in_iff.
wenzelm@64390
  1465
wenzelm@64390
  1466
  - Rules count_inI and in_countE obtain facts of the form
wenzelm@64390
  1467
    "count M a = n" from membership.
wenzelm@64390
  1468
wenzelm@64390
  1469
  - Rules count_in_diffI and in_diff_countE obtain facts of the form
wenzelm@64390
  1470
    "count M a = n + count N a" from membership on difference sets.
wenzelm@64390
  1471
wenzelm@64390
  1472
INCOMPATIBILITY.
wenzelm@64390
  1473
wenzelm@64390
  1474
* Session HOL-Library: theory LaTeXsugar uses new-style "dummy_pats" for
wenzelm@64390
  1475
displaying equations in functional programming style --- variables
wenzelm@64390
  1476
present on the left-hand but not on the righ-hand side are replaced by
wenzelm@64390
  1477
underscores.
wenzelm@64390
  1478
wenzelm@64390
  1479
* Session HOL-Library: theory Combinator_PER provides combinator to
wenzelm@64390
  1480
build partial equivalence relations from a predicate and an equivalence
wenzelm@64390
  1481
relation.
wenzelm@64390
  1482
wenzelm@64390
  1483
* Session HOL-Library: theory Perm provides basic facts about almost
wenzelm@64390
  1484
everywhere fix bijections.
wenzelm@64390
  1485
wenzelm@64390
  1486
* Session HOL-Library: theory Normalized_Fraction allows viewing an
wenzelm@64390
  1487
element of a field of fractions as a normalized fraction (i.e. a pair of
wenzelm@64390
  1488
numerator and denominator such that the two are coprime and the
wenzelm@64390
  1489
denominator is normalized wrt. unit factors).
wenzelm@64390
  1490
wenzelm@64390
  1491
* Session HOL-NSA has been renamed to HOL-Nonstandard_Analysis.
wenzelm@64390
  1492
wenzelm@64390
  1493
* Session HOL-Multivariate_Analysis has been renamed to HOL-Analysis.
wenzelm@64390
  1494
wenzelm@64390
  1495
* Session HOL-Analysis: measure theory has been moved here from
wenzelm@64390
  1496
HOL-Probability. When importing HOL-Analysis some theorems need
wenzelm@64390
  1497
additional name spaces prefixes due to name clashes. INCOMPATIBILITY.
wenzelm@64390
  1498
wenzelm@64390
  1499
* Session HOL-Analysis: more complex analysis including Cauchy's
wenzelm@64390
  1500
inequality, Liouville theorem, open mapping theorem, maximum modulus
wenzelm@64390
  1501
principle, Residue theorem, Schwarz Lemma.
wenzelm@64390
  1502
wenzelm@64390
  1503
* Session HOL-Analysis: Theory of polyhedra: faces, extreme points,
wenzelm@64390
  1504
polytopes, and the Krein–Milman Minkowski theorem.
wenzelm@64390
  1505
wenzelm@64390
  1506
* Session HOL-Analysis: Numerous results ported from the HOL Light
wenzelm@64390
  1507
libraries: homeomorphisms, continuous function extensions, invariance of
wenzelm@64390
  1508
domain.
wenzelm@64390
  1509
wenzelm@64390
  1510
* Session HOL-Probability: the type of emeasure and nn_integral was
wenzelm@64390
  1511
changed from ereal to ennreal, INCOMPATIBILITY.
wenzelm@64390
  1512
wenzelm@64390
  1513
  emeasure :: 'a measure \<Rightarrow> 'a set \<Rightarrow> ennreal
wenzelm@64390
  1514
  nn_integral :: 'a measure \<Rightarrow> ('a \<Rightarrow> ennreal) \<Rightarrow> ennreal
wenzelm@64390
  1515
wenzelm@64390
  1516
* Session HOL-Probability: Code generation and QuickCheck for
wenzelm@64390
  1517
Probability Mass Functions.
wenzelm@64390
  1518
wenzelm@64390
  1519
* Session HOL-Probability: theory Random_Permutations contains some
wenzelm@64390
  1520
theory about choosing a permutation of a set uniformly at random and
wenzelm@64390
  1521
folding over a list in random order.
wenzelm@64390
  1522
wenzelm@64390
  1523
* Session HOL-Probability: theory SPMF formalises discrete
wenzelm@64390
  1524
subprobability distributions.
wenzelm@64390
  1525
wenzelm@64390
  1526
* Session HOL-Library: the names of multiset theorems have been
wenzelm@64390
  1527
normalised to distinguish which ordering the theorems are about
wenzelm@64390
  1528
wenzelm@64390
  1529
    mset_less_eqI ~> mset_subset_eqI
wenzelm@64390
  1530
    mset_less_insertD ~> mset_subset_insertD
wenzelm@64390
  1531
    mset_less_eq_count ~> mset_subset_eq_count
wenzelm@64390
  1532
    mset_less_diff_self ~> mset_subset_diff_self
wenzelm@64390
  1533
    mset_le_exists_conv ~> mset_subset_eq_exists_conv
wenzelm@64390
  1534
    mset_le_mono_add_right_cancel ~> mset_subset_eq_mono_add_right_cancel
wenzelm@64390
  1535
    mset_le_mono_add_left_cancel ~> mset_subset_eq_mono_add_left_cancel
wenzelm@64390
  1536
    mset_le_mono_add ~> mset_subset_eq_mono_add
wenzelm@64390
  1537
    mset_le_add_left ~> mset_subset_eq_add_left
wenzelm@64390
  1538
    mset_le_add_right ~> mset_subset_eq_add_right
wenzelm@64390
  1539
    mset_le_single ~> mset_subset_eq_single
wenzelm@64390
  1540
    mset_le_multiset_union_diff_commute ~> mset_subset_eq_multiset_union_diff_commute
wenzelm@64390
  1541
    diff_le_self ~> diff_subset_eq_self
wenzelm@64390
  1542
    mset_leD ~> mset_subset_eqD
wenzelm@64390
  1543
    mset_lessD ~> mset_subsetD
wenzelm@64390
  1544
    mset_le_insertD ~> mset_subset_eq_insertD
wenzelm@64390
  1545
    mset_less_of_empty ~> mset_subset_of_empty
wenzelm@64390
  1546
    mset_less_size ~> mset_subset_size
wenzelm@64390
  1547
    wf_less_mset_rel ~> wf_subset_mset_rel
wenzelm@64390
  1548
    count_le_replicate_mset_le ~> count_le_replicate_mset_subset_eq
wenzelm@64390
  1549
    mset_remdups_le ~> mset_remdups_subset_eq
wenzelm@64390
  1550
    ms_lesseq_impl ~> subset_eq_mset_impl
wenzelm@64390
  1551
wenzelm@64390
  1552
Some functions have been renamed:
wenzelm@64390
  1553
    ms_lesseq_impl -> subset_eq_mset_impl
wenzelm@64390
  1554
wenzelm@64390
  1555
* HOL-Library: multisets are now ordered with the multiset ordering
wenzelm@64390
  1556
    #\<subseteq># ~> \<le>
wenzelm@64390
  1557
    #\<subset># ~> <
wenzelm@64390
  1558
    le_multiset ~> less_eq_multiset
wenzelm@64390
  1559
    less_multiset ~> le_multiset
wenzelm@64390
  1560
INCOMPATIBILITY.
wenzelm@64390
  1561
wenzelm@64390
  1562
* Session HOL-Library: the prefix multiset_order has been discontinued:
wenzelm@64390
  1563
the theorems can be directly accessed. As a consequence, the lemmas
wenzelm@64390
  1564
"order_multiset" and "linorder_multiset" have been discontinued, and the
wenzelm@64390
  1565
interpretations "multiset_linorder" and "multiset_wellorder" have been
wenzelm@64390
  1566
replaced by instantiations. INCOMPATIBILITY.
wenzelm@64390
  1567
wenzelm@64390
  1568
* Session HOL-Library: some theorems about the multiset ordering have
wenzelm@64390
  1569
been renamed:
wenzelm@64390
  1570
wenzelm@64390
  1571
    le_multiset_def ~> less_eq_multiset_def
wenzelm@64390
  1572
    less_multiset_def ~> le_multiset_def
wenzelm@64390
  1573
    less_eq_imp_le_multiset ~> subset_eq_imp_le_multiset
wenzelm@64390
  1574
    mult_less_not_refl ~> mset_le_not_refl
wenzelm@64390
  1575
    mult_less_trans ~> mset_le_trans
wenzelm@64390
  1576
    mult_less_not_sym ~> mset_le_not_sym
wenzelm@64390
  1577
    mult_less_asym ~> mset_le_asym
wenzelm@64390
  1578
    mult_less_irrefl ~> mset_le_irrefl
wenzelm@64390
  1579
    union_less_mono2{,1,2} ~> union_le_mono2{,1,2}
wenzelm@64390
  1580
wenzelm@64390
  1581
    le_multiset\<^sub>H\<^sub>O ~> less_eq_multiset\<^sub>H\<^sub>O
wenzelm@64390
  1582
    le_multiset_total ~> less_eq_multiset_total
wenzelm@64390
  1583
    less_multiset_right_total ~> subset_eq_imp_le_multiset
wenzelm@64390
  1584
    le_multiset_empty_left ~> less_eq_multiset_empty_left
wenzelm@64390
  1585
    le_multiset_empty_right ~> less_eq_multiset_empty_right
wenzelm@64390
  1586
    less_multiset_empty_right ~> le_multiset_empty_left
wenzelm@64390
  1587
    less_multiset_empty_left ~> le_multiset_empty_right
wenzelm@64390
  1588
    union_less_diff_plus ~> union_le_diff_plus
wenzelm@64390
  1589
    ex_gt_count_imp_less_multiset ~> ex_gt_count_imp_le_multiset
wenzelm@64390
  1590
    less_multiset_plus_left_nonempty ~> le_multiset_plus_left_nonempty
wenzelm@64390
  1591
    le_multiset_plus_right_nonempty ~> le_multiset_plus_right_nonempty
wenzelm@64390
  1592
INCOMPATIBILITY.
wenzelm@64390
  1593
wenzelm@64390
  1594
* Session HOL-Library: the lemma mset_map has now the attribute [simp].
wenzelm@64390
  1595
INCOMPATIBILITY.
wenzelm@64390
  1596
wenzelm@64390
  1597
* Session HOL-Library: some theorems about multisets have been removed.
wenzelm@64390
  1598
INCOMPATIBILITY, use the following replacements:
wenzelm@64390
  1599
wenzelm@64390
  1600
    le_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1601
    less_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1602
    le_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1603
    less_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1604
    add_eq_self_empty_iff ~> add_cancel_left_right
wenzelm@64390
  1605
    mset_subset_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1606
    mset_less_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1607
    mset_le_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1608
    empty_inter ~> subset_mset.inf_bot_left
wenzelm@64390
  1609
    inter_empty ~> subset_mset.inf_bot_right
wenzelm@64390
  1610
    empty_sup ~> subset_mset.sup_bot_left
wenzelm@64390
  1611
    sup_empty ~> subset_mset.sup_bot_right
wenzelm@64390
  1612
    bdd_below_multiset ~> subset_mset.bdd_above_bot
wenzelm@64390
  1613
    subset_eq_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1614
    le_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1615
    mset_subset_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1616
    mset_less_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1617
wenzelm@64390
  1618
* Session HOL-Library: some typeclass constraints about multisets have
wenzelm@64390
  1619
been reduced from ordered or linordered to preorder. Multisets have the
wenzelm@64390
  1620
additional typeclasses order_bot, no_top,
wenzelm@64390
  1621
ordered_ab_semigroup_add_imp_le, ordered_cancel_comm_monoid_add,
wenzelm@64390
  1622
linordered_cancel_ab_semigroup_add, and
wenzelm@64390
  1623
ordered_ab_semigroup_monoid_add_imp_le. INCOMPATIBILITY.
wenzelm@64390
  1624
wenzelm@64390
  1625
* Session HOL-Library: there are some new simplification rules about
wenzelm@64390
  1626
multisets, the multiset ordering, and the subset ordering on multisets.
wenzelm@64390
  1627
INCOMPATIBILITY.
wenzelm@64390
  1628
wenzelm@64390
  1629
* Session HOL-Library: the subset ordering on multisets has now the
wenzelm@64390
  1630
interpretations ordered_ab_semigroup_monoid_add_imp_le and
wenzelm@64390
  1631
bounded_lattice_bot. INCOMPATIBILITY.
wenzelm@64390
  1632
wenzelm@64390
  1633
* Session HOL-Library, theory Multiset: single has been removed in favor
wenzelm@64390
  1634
of add_mset that roughly corresponds to Set.insert. Some theorems have
wenzelm@64390
  1635
removed or changed:
wenzelm@64390
  1636
wenzelm@64390
  1637
  single_not_empty ~> add_mset_not_empty or empty_not_add_mset
wenzelm@64390
  1638
  fold_mset_insert ~> fold_mset_add_mset
wenzelm@64390
  1639
  image_mset_insert ~> image_mset_add_mset
wenzelm@64390
  1640
  union_single_eq_diff
wenzelm@64390
  1641
  multi_self_add_other_not_self
wenzelm@64390
  1642
  diff_single_eq_union
wenzelm@64390
  1643
INCOMPATIBILITY.
wenzelm@64390
  1644
wenzelm@64390
  1645
* Session HOL-Library, theory Multiset: some theorems have been changed
wenzelm@64390
  1646
to use add_mset instead of single:
wenzelm@64390
  1647
wenzelm@64390
  1648
  mset_add
wenzelm@64390
  1649
  multi_self_add_other_not_self
wenzelm@64390
  1650
  diff_single_eq_union
wenzelm@64390
  1651
  union_single_eq_diff
wenzelm@64390
  1652
  union_single_eq_member
wenzelm@64390
  1653
  add_eq_conv_diff
wenzelm@64390
  1654
  insert_noteq_member
wenzelm@64390
  1655
  add_eq_conv_ex
wenzelm@64390
  1656
  multi_member_split
wenzelm@64390
  1657
  multiset_add_sub_el_shuffle
wenzelm@64390
  1658
  mset_subset_eq_insertD
wenzelm@64390
  1659
  mset_subset_insertD
wenzelm@64390
  1660
  insert_subset_eq_iff
wenzelm@64390
  1661
  insert_union_subset_iff
wenzelm@64390
  1662
  multi_psub_of_add_self
wenzelm@64390
  1663
  inter_add_left1
wenzelm@64390
  1664
  inter_add_left2
wenzelm@64390
  1665
  inter_add_right1
wenzelm@64390
  1666
  inter_add_right2
wenzelm@64390
  1667
  sup_union_left1
wenzelm@64390
  1668
  sup_union_left2
wenzelm@64390
  1669
  sup_union_right1
wenzelm@64390
  1670
  sup_union_right2
wenzelm@64390
  1671
  size_eq_Suc_imp_eq_union
wenzelm@64390
  1672
  multi_nonempty_split
wenzelm@64390
  1673
  mset_insort
wenzelm@64390
  1674
  mset_update
wenzelm@64390
  1675
  mult1I
wenzelm@64390
  1676
  less_add
wenzelm@64390
  1677
  mset_zip_take_Cons_drop_twice
wenzelm@64390
  1678
  rel_mset_Zero
wenzelm@64390
  1679
  msed_map_invL
wenzelm@64390
  1680
  msed_map_invR
wenzelm@64390
  1681
  msed_rel_invL
wenzelm@64390
  1682
  msed_rel_invR
wenzelm@64390
  1683
  le_multiset_right_total
wenzelm@64390
  1684
  multiset_induct
wenzelm@64390
  1685
  multiset_induct2_size
wenzelm@64390
  1686
  multiset_induct2
wenzelm@64390
  1687
INCOMPATIBILITY.
wenzelm@64390
  1688
wenzelm@64390
  1689
* Session HOL-Library, theory Multiset: the definitions of some
wenzelm@64390
  1690
constants have changed to use add_mset instead of adding a single
wenzelm@64390
  1691
element:
wenzelm@64390
  1692
wenzelm@64390
  1693
  image_mset
wenzelm@64390
  1694
  mset
wenzelm@64390
  1695
  replicate_mset
wenzelm@64390
  1696
  mult1
wenzelm@64390
  1697
  pred_mset
wenzelm@64390
  1698
  rel_mset'
wenzelm@64390
  1699
  mset_insort
wenzelm@64390
  1700
wenzelm@64390
  1701
INCOMPATIBILITY.
wenzelm@64390
  1702
wenzelm@64390
  1703
* Session HOL-Library, theory Multiset: due to the above changes, the
wenzelm@64390
  1704
attributes of some multiset theorems have been changed:
wenzelm@64390
  1705
wenzelm@64390
  1706
  insert_DiffM  [] ~> [simp]
wenzelm@64390
  1707
  insert_DiffM2 [simp] ~> []
wenzelm@64390
  1708
  diff_add_mset_swap [simp]
wenzelm@64390
  1709
  fold_mset_add_mset [simp]
wenzelm@64390
  1710
  diff_diff_add [simp] (for multisets only)
wenzelm@64390
  1711
  diff_cancel [simp] ~> []
wenzelm@64390
  1712
  count_single [simp] ~> []
wenzelm@64390
  1713
  set_mset_single [simp] ~> []
wenzelm@64390
  1714
  size_multiset_single [simp] ~> []
wenzelm@64390
  1715
  size_single [simp] ~> []
wenzelm@64390
  1716
  image_mset_single [simp] ~> []
wenzelm@64390
  1717
  mset_subset_eq_mono_add_right_cancel [simp] ~> []
wenzelm@64390
  1718
  mset_subset_eq_mono_add_left_cancel [simp] ~> []
wenzelm@64390
  1719
  fold_mset_single [simp] ~> []
wenzelm@64390
  1720
  subset_eq_empty [simp] ~> []
wenzelm@64390
  1721
  empty_sup [simp] ~> []
wenzelm@64390
  1722
  sup_empty [simp] ~> []
wenzelm@64390
  1723
  inter_empty [simp] ~> []
wenzelm@64390
  1724
  empty_inter [simp] ~> []
wenzelm@64390
  1725
INCOMPATIBILITY.
wenzelm@64390
  1726
wenzelm@64391
  1727
* Session HOL-Library, theory Multiset: the order of the variables in
wenzelm@64390
  1728
the second cases of multiset_induct, multiset_induct2_size,
wenzelm@64390
  1729
multiset_induct2 has been changed (e.g. Add A a ~> Add a A).
wenzelm@64390
  1730
INCOMPATIBILITY.
wenzelm@64390
  1731
wenzelm@64390
  1732
* Session HOL-Library, theory Multiset: there is now a simplification
wenzelm@64390
  1733
procedure on multisets. It mimics the behavior of the procedure on
wenzelm@64390
  1734
natural numbers. INCOMPATIBILITY.
wenzelm@64390
  1735
wenzelm@64390
  1736
* Session HOL-Library, theory Multiset: renamed sums and products of
wenzelm@64390
  1737
multisets:
wenzelm@64390
  1738
wenzelm@64390
  1739
  msetsum ~> sum_mset
wenzelm@64390
  1740
  msetprod ~> prod_mset
wenzelm@64390
  1741
wenzelm@64390
  1742
* Session HOL-Library, theory Multiset: the notation for intersection
wenzelm@64390
  1743
and union of multisets have been changed:
wenzelm@64390
  1744
wenzelm@64390
  1745
  #\<inter> ~> \<inter>#
wenzelm@64390
  1746
  #\<union> ~> \<union>#
wenzelm@64390
  1747
wenzelm@64390
  1748
INCOMPATIBILITY.
wenzelm@64390
  1749
wenzelm@64390
  1750
* Session HOL-Library, theory Multiset: the lemma
wenzelm@64390
  1751
one_step_implies_mult_aux on multisets has been removed, use
wenzelm@64390
  1752
one_step_implies_mult instead. INCOMPATIBILITY.
wenzelm@64390
  1753
wenzelm@64390
  1754
* Session HOL-Library: theory Complete_Partial_Order2 provides reasoning
wenzelm@64390
  1755
support for monotonicity and continuity in chain-complete partial orders
wenzelm@64390
  1756
and about admissibility conditions for fixpoint inductions.
wenzelm@64390
  1757
haftmann@64523
  1758
* Session HOL-Library: theory Library/Polynomial contains also
haftmann@64523
  1759
derivation of polynomials (formerly in Library/Poly_Deriv) but not
haftmann@64523
  1760
gcd/lcm on polynomials over fields. This has been moved to a separate
haftmann@64523
  1761
theory Library/Polynomial_GCD_euclidean.thy, to pave way for a possible
haftmann@64523
  1762
future different type class instantiation for polynomials over factorial
haftmann@64523
  1763
rings. INCOMPATIBILITY.
wenzelm@64390
  1764
wenzelm@64390
  1765
* Session HOL-Library: theory Sublist provides function "prefixes" with
wenzelm@64390
  1766
the following renaming
wenzelm@64390
  1767
wenzelm@64390
  1768
  prefixeq -> prefix
wenzelm@64390
  1769
  prefix -> strict_prefix
wenzelm@64390
  1770
  suffixeq -> suffix
wenzelm@64390
  1771
  suffix -> strict_suffix
wenzelm@64390
  1772
wenzelm@64390
  1773
Added theory of longest common prefixes.
blanchet@64389
  1774
wenzelm@64391
  1775
* Session HOL-Number_Theory: algebraic foundation for primes:
wenzelm@64391
  1776
Generalisation of predicate "prime" and introduction of predicates
wenzelm@64391
  1777
"prime_elem", "irreducible", a "prime_factorization" function, and the
wenzelm@64391
  1778
"factorial_ring" typeclass with instance proofs for nat, int, poly. Some
wenzelm@64391
  1779
theorems now have different names, most notably "prime_def" is now
wenzelm@64391
  1780
"prime_nat_iff". INCOMPATIBILITY.
wenzelm@64391
  1781
wenzelm@64391
  1782
* Session Old_Number_Theory has been removed, after porting remaining
wenzelm@64391
  1783
theories.
wenzelm@64391
  1784
wenzelm@64551
  1785
* Session HOL-Types_To_Sets provides an experimental extension of
wenzelm@64551
  1786
Higher-Order Logic to allow translation of types to sets.
wenzelm@64551
  1787
wenzelm@63198
  1788
wenzelm@62498
  1789
*** ML ***
wenzelm@62498
  1790
wenzelm@63227
  1791
* Integer.gcd and Integer.lcm use efficient operations from the Poly/ML
wenzelm@63228
  1792
library (notably for big integers). Subtle change of semantics:
wenzelm@63228
  1793
Integer.gcd and Integer.lcm both normalize the sign, results are never
wenzelm@63228
  1794
negative. This coincides with the definitions in HOL/GCD.thy.
wenzelm@63228
  1795
INCOMPATIBILITY.
wenzelm@63227
  1796
wenzelm@63212
  1797
* Structure Rat for rational numbers is now an integral part of
wenzelm@63215
  1798
Isabelle/ML, with special notation @int/nat or @int for numerals (an
wenzelm@63215
  1799
abbreviation for antiquotation @{Pure.rat argument}) and ML pretty
wenzelm@63212
  1800
printing. Standard operations on type Rat.rat are provided via ad-hoc
wenzelm@63215
  1801
overloading of + - * / < <= > >= ~ abs. INCOMPATIBILITY, need to
wenzelm@63212
  1802
use + instead of +/ etc. Moreover, exception Rat.DIVZERO has been
wenzelm@63212
  1803
superseded by General.Div.
wenzelm@63198
  1804
wenzelm@64390
  1805
* ML antiquotation @{path} is superseded by @{file}, which ensures that
wenzelm@64390
  1806
the argument is a plain file. Minor INCOMPATIBILITY.
wenzelm@64390
  1807
wenzelm@64390
  1808
* Antiquotation @{make_string} is available during Pure bootstrap --
wenzelm@64390
  1809
with approximative output quality.
wenzelm@64390
  1810
wenzelm@64390
  1811
* Low-level ML system structures (like PolyML and RunCall) are no longer
wenzelm@64390
  1812
exposed to Isabelle/ML user-space. Potential INCOMPATIBILITY.
wenzelm@64390
  1813
wenzelm@62861
  1814
* The ML function "ML" provides easy access to run-time compilation.
wenzelm@62861
  1815
This is particularly useful for conditional compilation, without
wenzelm@62861
  1816
requiring separate files.
wenzelm@62861
  1817
wenzelm@62498
  1818
* Option ML_exception_debugger controls detailed exception trace via the
wenzelm@62498
  1819
Poly/ML debugger. Relevant ML modules need to be compiled beforehand
wenzelm@62498
  1820
with ML_file_debug, or with ML_file and option ML_debugger enabled. Note
wenzelm@62498
  1821
debugger information requires consirable time and space: main
wenzelm@62498
  1822
Isabelle/HOL with full debugger support may need ML_system_64.
wenzelm@62498
  1823
wenzelm@62514
  1824
* Local_Theory.restore has been renamed to Local_Theory.reset to
wenzelm@62514
  1825
emphasize its disruptive impact on the cumulative context, notably the
wenzelm@62514
  1826
scope of 'private' or 'qualified' names. Note that Local_Theory.reset is
wenzelm@62514
  1827
only appropriate when targets are managed, e.g. starting from a global
wenzelm@62514
  1828
theory and returning to it. Regular definitional packages should use
wenzelm@62514
  1829
balanced blocks of Local_Theory.open_target versus
wenzelm@62514
  1830
Local_Theory.close_target instead. Rare INCOMPATIBILITY.
wenzelm@62514
  1831
wenzelm@62519
  1832
* Structure TimeLimit (originally from the SML/NJ library) has been
wenzelm@62519
  1833
replaced by structure Timeout, with slightly different signature.
wenzelm@62519
  1834
INCOMPATIBILITY.
wenzelm@62519
  1835
wenzelm@62551
  1836
* Discontinued cd and pwd operations, which are not well-defined in a
wenzelm@62551
  1837
multi-threaded environment. Note that files are usually located
wenzelm@62551
  1838
relatively to the master directory of a theory (see also
wenzelm@62551
  1839
File.full_path). Potential INCOMPATIBILITY.
wenzelm@62551
  1840
wenzelm@63352
  1841
* Binding.empty_atts supersedes Thm.empty_binding and
wenzelm@63352
  1842
Attrib.empty_binding. Minor INCOMPATIBILITY.
wenzelm@63352
  1843
wenzelm@62498
  1844
wenzelm@62354
  1845
*** System ***
wenzelm@62354
  1846
wenzelm@64390
  1847
* SML/NJ and old versions of Poly/ML are no longer supported.
wenzelm@64390
  1848
wenzelm@64390
  1849
* Poly/ML heaps now follow the hierarchy of sessions, and thus require
wenzelm@64390
  1850
much less disk space.
wenzelm@63226
  1851
wenzelm@62591
  1852
* The Isabelle ML process is now managed directly by Isabelle/Scala, and
wenzelm@62591
  1853
shell scripts merely provide optional command-line access. In
wenzelm@62591
  1854
particular:
wenzelm@62591
  1855
wenzelm@62591
  1856
  . Scala module ML_Process to connect to the raw ML process,
wenzelm@62591
  1857
    with interaction via stdin/stdout/stderr or in batch mode;
wenzelm@62591
  1858
  . command-line tool "isabelle console" as interactive wrapper;
wenzelm@62591
  1859
  . command-line tool "isabelle process" as batch mode wrapper.
wenzelm@62588
  1860
wenzelm@62588
  1861
* The executable "isabelle_process" has been discontinued. Tools and
wenzelm@62588
  1862
prover front-ends should use ML_Process or Isabelle_Process in
wenzelm@62591
  1863
Isabelle/Scala. INCOMPATIBILITY.
wenzelm@62588
  1864
wenzelm@62588
  1865
* New command-line tool "isabelle process" supports ML evaluation of
wenzelm@62588
  1866
literal expressions (option -e) or files (option -f) in the context of a
wenzelm@62588
  1867
given heap image. Errors lead to premature exit of the ML process with
wenzelm@62588
  1868
return code 1.
wenzelm@62588
  1869
wenzelm@64390
  1870
* The command-line tool "isabelle build" supports option -N for cyclic
wenzelm@64390
  1871
shuffling of NUMA CPU nodes. This may help performance tuning on Linux
wenzelm@64390
  1872
servers with separate CPU/memory modules.
wenzelm@64390
  1873
wenzelm@64390
  1874
* System option "threads" (for the size of the Isabelle/ML thread farm)
wenzelm@64390
  1875
is also passed to the underlying ML runtime system as --gcthreads,
wenzelm@64274
  1876
unless there is already a default provided via ML_OPTIONS settings.
wenzelm@64274
  1877
wenzelm@63827
  1878
* System option "checkpoint" helps to fine-tune the global heap space
wenzelm@63827
  1879
management of isabelle build. This is relevant for big sessions that may
wenzelm@63827
  1880
exhaust the small 32-bit address space of the ML process (which is used
wenzelm@63827
  1881
by default).
wenzelm@63827
  1882
wenzelm@64308
  1883
* System option "profiling" specifies the mode for global ML profiling
wenzelm@64342
  1884
in "isabelle build". Possible values are "time", "allocations". The
wenzelm@64342
  1885
command-line tool "isabelle profiling_report" helps to digest the
wenzelm@64342
  1886
resulting log files.
wenzelm@64308
  1887
wenzelm@63986
  1888
* System option "ML_process_policy" specifies an optional command prefix
wenzelm@63986
  1889
for the underlying ML process, e.g. to control CPU affinity on
wenzelm@63987
  1890
multiprocessor systems. The "isabelle jedit" tool allows to override the
wenzelm@63987
  1891
implicit default via option -p.
wenzelm@63986
  1892
wenzelm@64390
  1893
* Command-line tool "isabelle console" provides option -r to help to
wenzelm@64390
  1894
bootstrapping Isabelle/Pure interactively.
wenzelm@64390
  1895
wenzelm@64390
  1896
* Command-line tool "isabelle yxml" has been discontinued.
wenzelm@64390
  1897
INCOMPATIBILITY, use operations from the modules "XML" and "YXML" in
wenzelm@64390
  1898
Isabelle/ML or Isabelle/Scala.
wenzelm@64390
  1899
wenzelm@64390
  1900
* Many Isabelle tools that require a Java runtime system refer to the
wenzelm@64390
  1901
settings ISABELLE_TOOL_JAVA_OPTIONS32 / ISABELLE_TOOL_JAVA_OPTIONS64,
wenzelm@64390
  1902
depending on the underlying platform. The settings for "isabelle build"
wenzelm@64390
  1903
ISABELLE_BUILD_JAVA_OPTIONS32 / ISABELLE_BUILD_JAVA_OPTIONS64 have been
wenzelm@64390
  1904
discontinued. Potential INCOMPATIBILITY.
wenzelm@64390
  1905
wenzelm@64390
  1906
* The Isabelle system environment always ensures that the main
wenzelm@64390
  1907
executables are found within the shell search $PATH: "isabelle" and
wenzelm@64390
  1908
"isabelle_scala_script".
wenzelm@64390
  1909
wenzelm@64390
  1910
* Isabelle tools may consist of .scala files: the Scala compiler is
wenzelm@64390
  1911
invoked on the spot. The source needs to define some object that extends
wenzelm@64390
  1912
Isabelle_Tool.Body.
wenzelm@64390
  1913
wenzelm@64390
  1914
* File.bash_string, File.bash_path etc. represent Isabelle/ML and
wenzelm@64390
  1915
Isabelle/Scala strings authentically within GNU bash. This is useful to
wenzelm@64390
  1916
produce robust shell scripts under program control, without worrying
wenzelm@64390
  1917
about spaces or special characters. Note that user output works via
wenzelm@64390
  1918
Path.print (ML) or Path.toString (Scala). INCOMPATIBILITY, the old (and
wenzelm@64390
  1919
less versatile) operations File.shell_quote, File.shell_path etc. have
wenzelm@64390
  1920
been discontinued.
wenzelm@64390
  1921
wenzelm@63995
  1922
* The isabelle_java executable allows to run a Java process within the
wenzelm@63995
  1923
name space of Java and Scala components that are bundled with Isabelle,
wenzelm@63995
  1924
but without the Isabelle settings environment.
wenzelm@63995
  1925
wenzelm@64390
  1926
* Isabelle/Scala: the SSH module supports ssh and sftp connections, for
wenzelm@64390
  1927
remote command-execution and file-system access. This resembles
wenzelm@64390
  1928
operations from module File and Isabelle_System to some extent. Note
wenzelm@64390
  1929
that Path specifications need to be resolved remotely via
wenzelm@64390
  1930
ssh.remote_path instead of File.standard_path: the implicit process
wenzelm@64390
  1931
environment is different, Isabelle settings are not available remotely.
wenzelm@64390
  1932
wenzelm@64390
  1933
* Isabelle/Scala: the Mercurial module supports repositories via the
wenzelm@64390
  1934
regular hg command-line interface. The repositroy clone and working
wenzelm@64390
  1935
directory may reside on a local or remote file-system (via ssh
wenzelm@64390
  1936
connection).
wenzelm@64265
  1937
wenzelm@62354
  1938
wenzelm@62354
  1939
wenzelm@62031
  1940
New in Isabelle2016 (February 2016)
wenzelm@62016
  1941
-----------------------------------
wenzelm@60138
  1942
wenzelm@61337
  1943
*** General ***
wenzelm@61337
  1944
wenzelm@62168
  1945
* Eisbach is now based on Pure instead of HOL. Objects-logics may import
wenzelm@62168
  1946
either the theory ~~/src/HOL/Eisbach/Eisbach (for HOL etc.) or
wenzelm@62168
  1947
~~/src/HOL/Eisbach/Eisbach_Old_Appl_Syntax (for FOL, ZF etc.). Note that
wenzelm@62168
  1948
the HOL-Eisbach session located in ~~/src/HOL/Eisbach/ contains further
wenzelm@62168
  1949
examples that do require HOL.
wenzelm@62168
  1950
wenzelm@62157
  1951
* Better resource usage on all platforms (Linux, Windows, Mac OS X) for
wenzelm@62157
  1952
both Isabelle/ML and Isabelle/Scala.  Slightly reduced heap space usage.
wenzelm@62157
  1953
wenzelm@62017
  1954
* Former "xsymbols" syntax with Isabelle symbols is used by default,
wenzelm@62017
  1955
without any special print mode. Important ASCII replacement syntax
wenzelm@62017
  1956
remains available under print mode "ASCII", but less important syntax
wenzelm@62017
  1957
has been removed (see below).
wenzelm@62017
  1958
wenzelm@62109
  1959
* Support for more arrow symbols, with rendering in LaTeX and Isabelle
wenzelm@62109
  1960
fonts: \<Lleftarrow> \<Rrightarrow> \<longlongleftarrow> \<longlongrightarrow> \<longlonglongleftarrow> \<longlonglongrightarrow>.
wenzelm@62017
  1961
wenzelm@62108
  1962
* Special notation \<struct> for the first implicit 'structure' in the
wenzelm@62108
  1963
context has been discontinued. Rare INCOMPATIBILITY, use explicit
wenzelm@62108
  1964
structure name instead, notably in indexed notation with block-subscript
wenzelm@62108
  1965
(e.g. \<odot>\<^bsub>A\<^esub>).
wenzelm@62108
  1966
wenzelm@62108
  1967
* The glyph for \<diamond> in the IsabelleText font now corresponds better to its
wenzelm@62108
  1968
counterpart \<box> as quantifier-like symbol. A small diamond is available as
wenzelm@62108
  1969
\<diamondop>; the old symbol \<struct> loses this rendering and any special
wenzelm@62108
  1970
meaning.
wenzelm@62108
  1971
wenzelm@62017
  1972
* Syntax for formal comments "-- text" now also supports the symbolic
wenzelm@62017
  1973
form "\<comment> text". Command-line tool "isabelle update_cartouches -c" helps
wenzelm@62017
  1974
to update old sources.
wenzelm@62017
  1975
wenzelm@61337
  1976
* Toplevel theorem statements have been simplified as follows:
wenzelm@61337
  1977
wenzelm@61337
  1978
  theorems             ~>  lemmas
wenzelm@61337
  1979
  schematic_lemma      ~>  schematic_goal
wenzelm@61337
  1980
  schematic_theorem    ~>  schematic_goal
wenzelm@61337
  1981
  schematic_corollary  ~>  schematic_goal
wenzelm@61337
  1982
wenzelm@61337
  1983
Command-line tool "isabelle update_theorems" updates theory sources
wenzelm@61337
  1984
accordingly.
wenzelm@61337
  1985
wenzelm@61338
  1986
* Toplevel theorem statement 'proposition' is another alias for
wenzelm@61338
  1987
'theorem'.
wenzelm@61338
  1988
wenzelm@62169
  1989
* The old 'defs' command has been removed (legacy since Isabelle2014).
wenzelm@62169
  1990
INCOMPATIBILITY, use regular 'definition' instead. Overloaded and/or
wenzelm@62169
  1991
deferred definitions require a surrounding 'overloading' block.
wenzelm@62169
  1992
wenzelm@61337
  1993
wenzelm@60610
  1994
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@60610
  1995
wenzelm@60986
  1996
* IDE support for the source-level debugger of Poly/ML, to work with
wenzelm@62253
  1997
Isabelle/ML and official Standard ML. Option "ML_debugger" and commands
wenzelm@62253
  1998
'ML_file_debug', 'ML_file_no_debug', 'SML_file_debug',
wenzelm@62253
  1999
'SML_file_no_debug' control compilation of sources with or without
wenzelm@62253
  2000
debugging information. The Debugger panel allows to set breakpoints (via
wenzelm@62253
  2001
context menu), step through stopped threads, evaluate local ML
wenzelm@62253
  2002
expressions etc. At least one Debugger view needs to be active to have
wenzelm@62253
  2003
any effect on the running ML program.
wenzelm@60984
  2004
wenzelm@61804
  2005
* The State panel manages explicit proof state output, with dynamic
wenzelm@61804
  2006
auto-update according to cursor movement. Alternatively, the jEdit
wenzelm@61804
  2007
action "isabelle.update-state" (shortcut S+ENTER) triggers manual
wenzelm@61804
  2008
update.
wenzelm@61729
  2009
wenzelm@61729
  2010
* The Output panel no longer shows proof state output by default, to
wenzelm@61729
  2011
avoid GUI overcrowding. INCOMPATIBILITY, use the State panel instead or
wenzelm@61729
  2012
enable option "editor_output_state".
wenzelm@61215
  2013
wenzelm@61804
  2014
* The text overview column (status of errors, warnings etc.) is updated
wenzelm@61804
  2015
asynchronously, leading to much better editor reactivity. Moreover, the
wenzelm@61804
  2016
full document node content is taken into account. The width of the
wenzelm@61804
  2017
column is scaled according to the main text area font, for improved
wenzelm@61804
  2018
visibility.
wenzelm@61804
  2019
wenzelm@61804
  2020
* The main text area no longer changes its color hue in outdated
wenzelm@61804
  2021
situations. The text overview column takes over the role to indicate
wenzelm@61804
  2022
unfinished edits in the PIDE pipeline. This avoids flashing text display
wenzelm@61804
  2023
due to ad-hoc updates by auxiliary GUI components, such as the State
wenzelm@61804
  2024
panel.
wenzelm@61804
  2025
wenzelm@62254
  2026
* Slightly improved scheduling for urgent print tasks (e.g. command
wenzelm@62254
  2027
state output, interactive queries) wrt. long-running background tasks.
wenzelm@62017
  2028
wenzelm@62017
  2029
* Completion of symbols via prefix of \<name> or \<^name> or \name is
wenzelm@62017
  2030
always possible, independently of the language context. It is never
wenzelm@62017
  2031
implicit: a popup will show up unconditionally.
wenzelm@62017
  2032
wenzelm@62017
  2033
* Additional abbreviations for syntactic completion may be specified in
wenzelm@62017
  2034
$ISABELLE_HOME/etc/abbrevs and $ISABELLE_HOME_USER/etc/abbrevs, with
wenzelm@62017
  2035
support for simple templates using ASCII 007 (bell) as placeholder.
wenzelm@62017
  2036
wenzelm@62234
  2037
* Symbols \<oplus>, \<Oplus>, \<otimes>, \<Otimes>, \<odot>, \<Odot>, \<ominus>, \<oslash> no longer provide abbreviations for
wenzelm@62234
  2038
completion like "+o", "*o", ".o" etc. -- due to conflicts with other
wenzelm@62234
  2039
ASCII syntax. INCOMPATIBILITY, use plain backslash-completion or define
wenzelm@62234
  2040
suitable abbreviations in $ISABELLE_HOME_USER/etc/abbrevs.
wenzelm@62234
  2041
wenzelm@61483
  2042
* Action "isabelle-emph" (with keyboard shortcut C+e LEFT) controls
wenzelm@61483
  2043
emphasized text style; the effect is visible in document output, not in
wenzelm@61483
  2044
the editor.
wenzelm@61483
  2045
wenzelm@61483
  2046
* Action "isabelle-reset" now uses keyboard shortcut C+e BACK_SPACE,
wenzelm@61483
  2047
instead of former C+e LEFT.
wenzelm@61483
  2048
wenzelm@61512
  2049
* The command-line tool "isabelle jedit" and the isabelle.Main
wenzelm@62027
  2050
application wrapper treat the default $USER_HOME/Scratch.thy more
wenzelm@61512
  2051
uniformly, and allow the dummy file argument ":" to open an empty buffer
wenzelm@61512
  2052
instead.
wenzelm@61512
  2053
wenzelm@62017
  2054
* New command-line tool "isabelle jedit_client" allows to connect to an
wenzelm@62017
  2055
already running Isabelle/jEdit process. This achieves the effect of
wenzelm@62017
  2056
single-instance applications seen on common GUI desktops.
wenzelm@62017
  2057
wenzelm@61530
  2058
* The default look-and-feel for Linux is the traditional "Metal", which
wenzelm@61530
  2059
works better with GUI scaling for very high-resolution displays (e.g.
wenzelm@61530
  2060
4K). Moreover, it is generally more robust than "Nimbus".
wenzelm@61530
  2061
wenzelm@62163
  2062
* Update to jedit-5.3.0, with improved GUI scaling and support of
wenzelm@62163
  2063
high-resolution displays (e.g. 4K).
wenzelm@62163
  2064
wenzelm@62034
  2065
* The main Isabelle executable is managed as single-instance Desktop
wenzelm@62034
  2066
application uniformly on all platforms: Linux, Windows, Mac OS X.
wenzelm@62034
  2067
wenzelm@60610
  2068
wenzelm@61405
  2069
*** Document preparation ***
wenzelm@61405
  2070
wenzelm@62017
  2071
* Commands 'paragraph' and 'subparagraph' provide additional section
wenzelm@62017
  2072
headings. Thus there are 6 levels of standard headings, as in HTML.
wenzelm@62017
  2073
wenzelm@62017
  2074
* Command 'text_raw' has been clarified: input text is processed as in
wenzelm@62017
  2075
'text' (with antiquotations and control symbols). The key difference is
wenzelm@62017
  2076
the lack of the surrounding isabelle markup environment in output.
wenzelm@62017
  2077
wenzelm@62017
  2078
* Text is structured in paragraphs and nested lists, using notation that
wenzelm@62017
  2079
is similar to Markdown. The control symbols for list items are as
wenzelm@62017
  2080
follows:
wenzelm@62017
  2081
wenzelm@62017
  2082
  \<^item>  itemize
wenzelm@62017
  2083
  \<^enum>  enumerate
wenzelm@62017
  2084
  \<^descr>  description
wenzelm@62017
  2085
wenzelm@61491
  2086
* There is a new short form for antiquotations with a single argument
wenzelm@61491
  2087
that is a cartouche: \<^name>\<open>...\<close> is equivalent to @{name \<open>...\<close>} and
wenzelm@61595
  2088
\<open>...\<close> without control symbol is equivalent to @{cartouche \<open>...\<close>}.
wenzelm@61595
  2089
\<^name> without following cartouche is equivalent to @{name}. The
wenzelm@61501
  2090
standard Isabelle fonts provide glyphs to render important control
wenzelm@61501
  2091
symbols, e.g. "\<^verbatim>", "\<^emph>", "\<^bold>".
wenzelm@61491
  2092
wenzelm@61595
  2093
* Antiquotations @{noindent}, @{smallskip}, @{medskip}, @{bigskip} with
wenzelm@61595
  2094
corresponding control symbols \<^noindent>, \<^smallskip>, \<^medskip>, \<^bigskip> specify spacing formally, using
wenzelm@61595
  2095
standard LaTeX macros of the same names.
wenzelm@61595
  2096
wenzelm@61491
  2097
* Antiquotation @{cartouche} in Isabelle/Pure is the same as @{text}.
wenzelm@61491
  2098
Consequently, \<open>...\<close> without any decoration prints literal quasi-formal
wenzelm@61492
  2099
text. Command-line tool "isabelle update_cartouches -t" helps to update
wenzelm@61492
  2100
old sources, by approximative patching of the content of string and
wenzelm@61492
  2101
cartouche tokens seen in theory sources.
wenzelm@61491
  2102
wenzelm@61491
  2103
* The @{text} antiquotation now ignores the antiquotation option
wenzelm@61491
  2104
"source". The given text content is output unconditionally, without any
wenzelm@61491
  2105
surrounding quotes etc. Subtle INCOMPATIBILITY, put quotes into the
wenzelm@61494
  2106
argument where they are really intended, e.g. @{text \<open>"foo"\<close>}. Initial
wenzelm@61494
  2107
or terminal spaces are ignored.
wenzelm@61491
  2108
wenzelm@62017
  2109
* Antiquotations @{emph} and @{bold} output LaTeX source recursively,
wenzelm@62017
  2110
adding appropriate text style markup. These may be used in the short
wenzelm@62017
  2111
form \<^emph>\<open>...\<close> and \<^bold>\<open>...\<close>.
wenzelm@62017
  2112
wenzelm@62017
  2113
* Document antiquotation @{footnote} outputs LaTeX source recursively,
wenzelm@62017
  2114
marked as \footnote{}. This may be used in the short form \<^footnote>\<open>...\<close>.
wenzelm@62017
  2115
wenzelm@62017
  2116
* Antiquotation @{verbatim [display]} supports option "indent".
wenzelm@62017
  2117
wenzelm@62017
  2118
* Antiquotation @{theory_text} prints uninterpreted theory source text
wenzelm@62231
  2119
(Isar outer syntax with command keywords etc.). This may be used in the
wenzelm@62231
  2120
short form \<^theory_text>\<open>...\<close>. @{theory_text [display]} supports option "indent".
wenzelm@62017
  2121
wenzelm@62017
  2122
* Antiquotation @{doc ENTRY} provides a reference to the given
wenzelm@62017
  2123
documentation, with a hyperlink in the Prover IDE.
wenzelm@62017
  2124
wenzelm@62017
  2125
* Antiquotations @{command}, @{method}, @{attribute} print checked
wenzelm@62017
  2126
entities of the Isar language.
wenzelm@62017
  2127
wenzelm@61471
  2128
* HTML presentation uses the standard IsabelleText font and Unicode
wenzelm@61471
  2129
rendering of Isabelle symbols like Isabelle/Scala/jEdit.  The former
wenzelm@61488
  2130
print mode "HTML" loses its special meaning.
wenzelm@61471
  2131
wenzelm@61405
  2132
wenzelm@60406
  2133
*** Isar ***
wenzelm@60406
  2134
wenzelm@62205
  2135
* Local goals ('have', 'show', 'hence', 'thus') allow structured rule
wenzelm@62205
  2136
statements like fixes/assumes/shows in theorem specifications, but the
wenzelm@62205
  2137
notation is postfix with keywords 'if' (or 'when') and 'for'. For
wenzelm@60555
  2138
example:
wenzelm@60414
  2139
wenzelm@60414
  2140
  have result: "C x y"
wenzelm@60414
  2141
    if "A x" and "B y"
wenzelm@60414
  2142
    for x :: 'a and y :: 'a
wenzelm@60414
  2143
    <proof>
wenzelm@60414
  2144
wenzelm@60449
  2145
The local assumptions are bound to the name "that". The result is
wenzelm@60449
  2146
exported from context of the statement as usual. The above roughly
wenzelm@60414
  2147
corresponds to a raw proof block like this:
wenzelm@60414
  2148
wenzelm@60414
  2149
  {
wenzelm@60414
  2150
    fix x :: 'a and y :: 'a
wenzelm@60449
  2151
    assume that: "A x" "B y"
wenzelm@60414
  2152
    have "C x y" <proof>
wenzelm@60414
  2153
  }
wenzelm@60414
  2154
  note result = this
wenzelm@60406
  2155
wenzelm@60555
  2156
The keyword 'when' may be used instead of 'if', to indicate 'presume'
wenzelm@60555
  2157
instead of 'assume' above.
wenzelm@60555
  2158
wenzelm@61733
  2159
* Assumptions ('assume', 'presume') allow structured rule statements
wenzelm@61733
  2160
using 'if' and 'for', similar to 'have' etc. above. For example:
wenzelm@61658
  2161
wenzelm@61658
  2162
  assume result: "C x y"
wenzelm@61658
  2163
    if "A x" and "B y"
wenzelm@61658
  2164
    for x :: 'a and y :: 'a
wenzelm@61658
  2165
wenzelm@61658
  2166
This assumes "\<And>x y::'a. A x \<Longrightarrow> B y \<Longrightarrow> C x y" and produces a general
wenzelm@61658
  2167
result as usual: "A ?x \<Longrightarrow> B ?y \<Longrightarrow> C ?x ?y".
wenzelm@61658
  2168
wenzelm@61658
  2169
Vacuous quantification in assumptions is omitted, i.e. a for-context
wenzelm@61658
  2170
only effects propositions according to actual use of variables. For
wenzelm@61658
  2171
example:
wenzelm@61658
  2172
wenzelm@61658
  2173
  assume "A x" and "B y" for x and y
wenzelm@61658
  2174
wenzelm@61658
  2175
is equivalent to:
wenzelm@61658
  2176
wenzelm@61658
  2177
  assume "\<And>x. A x" and "\<And>y. B y"
wenzelm@61658
  2178
wenzelm@60595
  2179
* The meaning of 'show' with Pure rule statements has changed: premises
wenzelm@60595
  2180
are treated in the sense of 'assume', instead of 'presume'. This means,
wenzelm@62205
  2181
a goal like "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x" can be solved completely as
wenzelm@62205
  2182
follows:
wenzelm@60595
  2183
wenzelm@60595
  2184
  show "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60595
  2185
wenzelm@60595
  2186
or:
wenzelm@60595
  2187
wenzelm@60595
  2188
  show "C x" if "A x" "B x" for x
wenzelm@60595
  2189
wenzelm@60595
  2190
Rare INCOMPATIBILITY, the old behaviour may be recovered as follows:
wenzelm@60595
  2191
wenzelm@60595
  2192
  show "C x" when "A x" "B x" for x
wenzelm@60595
  2193
wenzelm@60459
  2194
* New command 'consider' states rules for generalized elimination and
wenzelm@60459
  2195
case splitting. This is like a toplevel statement "theorem obtains" used
wenzelm@60459
  2196
within a proof body; or like a multi-branch 'obtain' without activation
wenzelm@60459
  2197
of the local context elements yet.
wenzelm@60459
  2198
wenzelm@60455
  2199
* Proof method "cases" allows to specify the rule as first entry of
wenzelm@60455
  2200
chained facts.  This is particularly useful with 'consider':
wenzelm@60455
  2201
wenzelm@60455
  2202
  consider (a) A | (b) B | (c) C <proof>
wenzelm@60455
  2203
  then have something
wenzelm@60455
  2204
  proof cases
wenzelm@60455
  2205
    case a
wenzelm@60455
  2206
    then show ?thesis <proof>
wenzelm@60455
  2207
  next
wenzelm@60455
  2208
    case b
wenzelm@60455
  2209
    then show ?thesis <proof>
wenzelm@60455
  2210
  next
wenzelm@60455
  2211
    case c
wenzelm@60455
  2212
    then show ?thesis <proof>
wenzelm@60455
  2213
  qed
wenzelm@60455
  2214
wenzelm@60565
  2215
* Command 'case' allows fact name and attribute specification like this:
wenzelm@60565
  2216
wenzelm@60565
  2217
  case a: (c xs)
wenzelm@60565
  2218
  case a [attributes]: (c xs)
wenzelm@60565
  2219
wenzelm@60565
  2220
Facts that are introduced by invoking the case context are uniformly
wenzelm@60565
  2221
qualified by "a"; the same name is used for the cumulative fact. The old
wenzelm@60565
  2222
form "case (c xs) [attributes]" is no longer supported. Rare
wenzelm@60565
  2223
INCOMPATIBILITY, need to adapt uses of case facts in exotic situations,
wenzelm@60565
  2224
and always put attributes in front.
wenzelm@60565
  2225
wenzelm@60618
  2226
* The standard proof method of commands 'proof' and '..' is now called
wenzelm@60618
  2227
"standard" to make semantically clear what it is; the old name "default"
wenzelm@60618
  2228
is still available as legacy for some time. Documentation now explains
wenzelm@60618
  2229
'..' more accurately as "by standard" instead of "by rule".
wenzelm@60618
  2230
wenzelm@62017
  2231
* Nesting of Isar goal structure has been clarified: the context after
wenzelm@62017
  2232
the initial backwards refinement is retained for the whole proof, within
wenzelm@62017
  2233
all its context sections (as indicated via 'next'). This is e.g.
wenzelm@62017
  2234
relevant for 'using', 'including', 'supply':
wenzelm@62017
  2235
wenzelm@62017
  2236
  have "A \<and> A" if a: A for A
wenzelm@62017
  2237
    supply [simp] = a
wenzelm@62017
  2238
  proof
wenzelm@62017
  2239
    show A by simp
wenzelm@62017
  2240
  next
wenzelm@62017
  2241
    show A by simp
wenzelm@62017
  2242
  qed
wenzelm@62017
  2243
wenzelm@62017
  2244
* Command 'obtain' binds term abbreviations (via 'is' patterns) in the
wenzelm@62017
  2245
proof body as well, abstracted over relevant parameters.
wenzelm@62017
  2246
wenzelm@62017
  2247
* Improved type-inference for theorem statement 'obtains': separate
wenzelm@62017
  2248
parameter scope for of each clause.
wenzelm@62017
  2249
wenzelm@62017
  2250
* Term abbreviations via 'is' patterns also work for schematic
wenzelm@62017
  2251
statements: result is abstracted over unknowns.
wenzelm@62017
  2252
wenzelm@60631
  2253
* Command 'subgoal' allows to impose some structure on backward
wenzelm@60631
  2254
refinements, to avoid proof scripts degenerating into long of 'apply'
wenzelm@60631
  2255
sequences. Further explanations and examples are given in the isar-ref
wenzelm@60631
  2256
manual.
wenzelm@60631
  2257
wenzelm@62017
  2258
* Command 'supply' supports fact definitions during goal refinement
wenzelm@62017
  2259
('apply' scripts).
wenzelm@62017
  2260
wenzelm@61166
  2261
* Proof method "goal_cases" turns the current subgoals into cases within
wenzelm@61166
  2262
the context; the conclusion is bound to variable ?case in each case. For
wenzelm@61166
  2263
example:
wenzelm@60617
  2264
wenzelm@60617
  2265
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2266
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2267
proof goal_cases
wenzelm@60622
  2268
  case (1 x)
wenzelm@60622
  2269
  then show ?case using \<open>A x\<close> \<open>B x\<close> sorry
wenzelm@60622
  2270
next
wenzelm@60622
  2271
  case (2 y z)
wenzelm@60622
  2272
  then show ?case using \<open>U y\<close> \<open>V z\<close> sorry
wenzelm@60622
  2273
qed
wenzelm@60622
  2274
wenzelm@60622
  2275
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2276
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2277
proof goal_cases
wenzelm@60617
  2278
  case prems: 1
wenzelm@60617
  2279
  then show ?case using prems sorry
wenzelm@60617
  2280
next
wenzelm@60617
  2281
  case prems: 2
wenzelm@60617
  2282
  then show ?case using prems sorry
wenzelm@60617
  2283
qed
wenzelm@60578
  2284
wenzelm@60581
  2285
* The undocumented feature of implicit cases goal1, goal2, goal3, etc.
wenzelm@60617
  2286
is marked as legacy, and will be removed eventually. The proof method
wenzelm@60617
  2287
"goals" achieves a similar effect within regular Isar; often it can be
wenzelm@60617
  2288
done more adequately by other means (e.g. 'consider').
wenzelm@60581
  2289
wenzelm@62017
  2290
* The vacuous fact "TERM x" may be established "by fact" or as `TERM x`
wenzelm@62017
  2291
as well, not just "by this" or "." as before.
wenzelm@60551
  2292
wenzelm@60554
  2293
* Method "sleep" succeeds after a real-time delay (in seconds). This is
wenzelm@60554
  2294
occasionally useful for demonstration and testing purposes.
wenzelm@60554
  2295
wenzelm@60406
  2296
wenzelm@60331
  2297
*** Pure ***
wenzelm@60331
  2298
wenzelm@61606
  2299
* Qualifiers in locale expressions default to mandatory ('!') regardless
wenzelm@61606
  2300
of the command. Previously, for 'locale' and 'sublocale' the default was
wenzelm@61606
  2301
optional ('?'). The old synatx '!' has been discontinued.
wenzelm@61606
  2302
INCOMPATIBILITY, remove '!' and add '?' as required.
ballarin@61565
  2303
ballarin@61566
  2304
* Keyword 'rewrites' identifies rewrite morphisms in interpretation
wenzelm@62017
  2305
commands. Previously, the keyword was 'where'. INCOMPATIBILITY.
ballarin@61566
  2306
ballarin@61701
  2307
* More gentle suppression of syntax along locale morphisms while
wenzelm@62017
  2308
printing terms. Previously 'abbreviation' and 'notation' declarations
wenzelm@62017
  2309
would be suppressed for morphisms except term identity. Now
ballarin@61701
  2310
'abbreviation' is also kept for morphims that only change the involved
wenzelm@62017
  2311
parameters, and only 'notation' is suppressed. This can be of great help
wenzelm@62017
  2312
when working with complex locale hierarchies, because proof states are
wenzelm@62017
  2313
displayed much more succinctly. It also means that only notation needs
wenzelm@62017
  2314
to be redeclared if desired, as illustrated by this example:
ballarin@61701
  2315
ballarin@61701
  2316
  locale struct = fixes composition :: "'a => 'a => 'a" (infixl "\<cdot>" 65)
ballarin@61701
  2317
  begin
ballarin@61701
  2318
    definition derived (infixl "\<odot>" 65) where ...
ballarin@61701
  2319
  end
ballarin@61701
  2320
ballarin@61701
  2321
  locale morphism =
ballarin@61701
  2322
    left: struct composition + right: struct composition'
ballarin@61701
  2323
    for composition (infix "\<cdot>" 65) and composition' (infix "\<cdot>''" 65)
ballarin@61701
  2324
  begin
ballarin@61701
  2325
    notation right.derived ("\<odot>''")
ballarin@61701
  2326
  end
ballarin@61701
  2327
wenzelm@61895
  2328
* Command 'global_interpretation' issues interpretations into global
wenzelm@61895
  2329
theories, with optional rewrite definitions following keyword 'defines'.
wenzelm@61895
  2330
wenzelm@61895
  2331
* Command 'sublocale' accepts optional rewrite definitions after keyword
haftmann@61675
  2332
'defines'.
haftmann@61675
  2333
wenzelm@61895
  2334
* Command 'permanent_interpretation' has been discontinued. Use
wenzelm@61895
  2335
'global_interpretation' or 'sublocale' instead. INCOMPATIBILITY.
haftmann@61670
  2336
wenzelm@61252
  2337
* Command 'print_definitions' prints dependencies of definitional
wenzelm@61252
  2338
specifications. This functionality used to be part of 'print_theory'.
wenzelm@61252
  2339
wenzelm@60331
  2340
* Configuration option rule_insts_schematic has been discontinued
wenzelm@62017
  2341
(intermediate legacy feature in Isabelle2015). INCOMPATIBILITY.
wenzelm@60331
  2342
wenzelm@62205
  2343
* Abbreviations in type classes now carry proper sort constraint. Rare
wenzelm@62205
  2344
INCOMPATIBILITY in situations where the previous misbehaviour has been
wenzelm@62205
  2345
exploited.
haftmann@60349
  2346
haftmann@60349
  2347
* Refinement of user-space type system in type classes: pseudo-local
wenzelm@62205
  2348
operations behave more similar to abbreviations. Potential
haftmann@60349
  2349
INCOMPATIBILITY in exotic situations.
haftmann@60349
  2350
haftmann@60349
  2351
nipkow@60171
  2352
*** HOL ***
nipkow@60171
  2353
wenzelm@62017
  2354
* The 'typedef' command has been upgraded from a partially checked
wenzelm@62017
  2355
"axiomatization", to a full definitional specification that takes the
wenzelm@62017
  2356
global collection of overloaded constant / type definitions into
wenzelm@62017
  2357
account. Type definitions with open dependencies on overloaded
wenzelm@62017
  2358
definitions need to be specified as "typedef (overloaded)". This
wenzelm@62017
  2359
provides extra robustness in theory construction. Rare INCOMPATIBILITY.
wenzelm@62017
  2360
wenzelm@62017
  2361
* Qualification of various formal entities in the libraries is done more
wenzelm@62017
  2362
uniformly via "context begin qualified definition ... end" instead of
wenzelm@62017
  2363
old-style "hide_const (open) ...". Consequently, both the defined
wenzelm@62017
  2364
constant and its defining fact become qualified, e.g. Option.is_none and
wenzelm@62017
  2365
Option.is_none_def. Occasional INCOMPATIBILITY in applications.
wenzelm@62017
  2366
wenzelm@62017
  2367
* Some old and rarely used ASCII replacement syntax has been removed.
wenzelm@62017
  2368
INCOMPATIBILITY, standard syntax with symbols should be used instead.
wenzelm@62017
  2369
The subsequent commands help to reproduce the old forms, e.g. to
wenzelm@62017
  2370
simplify porting old theories:
wenzelm@62017
  2371
wenzelm@62017
  2372
  notation iff  (infixr "<->" 25)
wenzelm@62017
  2373
wenzelm@62017
  2374
  notation Times  (infixr "<*>" 80)
wenzelm@62017
  2375
wenzelm@62017
  2376
  type_notation Map.map  (infixr "~=>" 0)
wenzelm@62017
  2377
  notation Map.map_comp  (infixl "o'_m" 55)
wenzelm@62017
  2378
wenzelm@62017
  2379
  type_notation FinFun.finfun ("(_ =>f /_)" [22, 21] 21)
wenzelm@62017
  2380
wenzelm@62017
  2381
  notation FuncSet.funcset  (infixr "->" 60)
wenzelm@62017
  2382
  notation FuncSet.extensional_funcset  (infixr "->\<^sub>E" 60)
wenzelm@62017
  2383
wenzelm@62017
  2384
  notation Omega_Words_Fun.conc (infixr "conc" 65)
wenzelm@62017
  2385
wenzelm@62017
  2386
  notation Preorder.equiv ("op ~~")
wenzelm@62017
  2387
    and Preorder.equiv ("(_/ ~~ _)" [51, 51] 50)
wenzelm@62017
  2388
wenzelm@62017
  2389
  notation (in topological_space) tendsto (infixr "--->" 55)
wenzelm@62017
  2390
  notation (in topological_space) LIMSEQ ("((_)/ ----> (_))" [60, 60] 60)
wenzelm@62017
  2391
  notation LIM ("((_)/ -- (_)/ --> (_))" [60, 0, 60] 60)
wenzelm@62017
  2392
wenzelm@62017
  2393
  notation NSA.approx (infixl "@=" 50)
wenzelm@62017
  2394
  notation NSLIMSEQ ("((_)/ ----NS> (_))" [60, 60] 60)
wenzelm@62017
  2395
  notation NSLIM ("((_)/ -- (_)/ --NS> (_))" [60, 0, 60] 60)
wenzelm@62017
  2396
wenzelm@62017
  2397
* The alternative notation "\<Colon>" for type and sort constraints has been
wenzelm@62017
  2398
removed: in LaTeX document output it looks the same as "::".
wenzelm@62017
  2399
INCOMPATIBILITY, use plain "::" instead.
wenzelm@62017
  2400
wenzelm@62017
  2401
* Commands 'inductive' and 'inductive_set' work better when names for
wenzelm@62017
  2402
intro rules are omitted: the "cases" and "induct" rules no longer
wenzelm@62017
  2403
declare empty case_names, but no case_names at all. This allows to use
wenzelm@62017
  2404
numbered cases in proofs, without requiring method "goal_cases".
wenzelm@62017
  2405
wenzelm@62017
  2406
* Inductive definitions ('inductive', 'coinductive', etc.) expose
wenzelm@62017
  2407
low-level facts of the internal construction only if the option
wenzelm@62093
  2408
"inductive_internals" is enabled. This refers to the internal predicate
wenzelm@62017
  2409
definition and its monotonicity result. Rare INCOMPATIBILITY.
wenzelm@62017
  2410
wenzelm@62017
  2411
* Recursive function definitions ('fun', 'function', 'partial_function')
wenzelm@62017
  2412
expose low-level facts of the internal construction only if the option
wenzelm@62205
  2413
"function_internals" is enabled. Its internal inductive definition is
wenzelm@62205
  2414
also subject to "inductive_internals". Rare INCOMPATIBILITY.
wenzelm@62093
  2415
wenzelm@62093
  2416
* BNF datatypes ('datatype', 'codatatype', etc.) expose low-level facts
wenzelm@62093
  2417
of the internal construction only if the option "bnf_internals" is
wenzelm@62093
  2418
enabled. This supersedes the former option "bnf_note_all". Rare
wenzelm@62093
  2419
INCOMPATIBILITY.
wenzelm@62017
  2420
wenzelm@62017
  2421
* Combinator to represent case distinction on products is named
wenzelm@62017
  2422
"case_prod", uniformly, discontinuing any input aliasses. Very popular
wenzelm@62017
  2423
theorem aliasses have been retained.
wenzelm@62017
  2424
haftmann@61424
  2425
Consolidated facts:
haftmann@61424
  2426
  PairE ~> prod.exhaust
haftmann@61424
  2427
  Pair_eq ~> prod.inject
haftmann@61424
  2428
  pair_collapse ~> prod.collapse
haftmann@61424
  2429
  Pair_fst_snd_eq ~> prod_eq_iff
haftmann@61424
  2430
  split_twice ~> prod.case_distrib
haftmann@61424
  2431
  split_weak_cong ~> prod.case_cong_weak
haftmann@61424
  2432
  split_split ~> prod.split
haftmann@61424
  2433
  split_split_asm ~> prod.split_asm
haftmann@61424
  2434
  splitI ~> case_prodI
haftmann@61424
  2435
  splitD ~> case_prodD
haftmann@61424
  2436
  splitI2 ~> case_prodI2
haftmann@61424
  2437
  splitI2' ~> case_prodI2'
haftmann@61424
  2438
  splitE ~> case_prodE
haftmann@61424
  2439
  splitE' ~> case_prodE'
haftmann@61424
  2440
  split_pair ~> case_prod_Pair
haftmann@61424
  2441
  split_eta ~> case_prod_eta
haftmann@61424
  2442
  split_comp ~> case_prod_comp
haftmann@61424
  2443
  mem_splitI ~> mem_case_prodI
haftmann@61424
  2444
  mem_splitI2 ~> mem_case_prodI2
haftmann@61424
  2445
  mem_splitE ~> mem_case_prodE
haftmann@61424
  2446
  The_split ~> The_case_prod
haftmann@61424
  2447
  cond_split_eta ~> cond_case_prod_eta
haftmann@61424
  2448
  Collect_split_in_rel_leE ~> Collect_case_prod_in_rel_leE
haftmann@61424
  2449
  Collect_split_in_rel_leI ~> Collect_case_prod_in_rel_leI
haftmann@61424
  2450
  in_rel_Collect_split_eq ~> in_rel_Collect_case_prod_eq
haftmann@61424
  2451
  Collect_split_Grp_eqD ~> Collect_case_prod_Grp_eqD
haftmann@61424
  2452
  Collect_split_Grp_inD ~> Collect_case_prod_Grp_in
haftmann@61424
  2453
  Domain_Collect_split ~> Domain_Collect_case_prod
haftmann@61424
  2454
  Image_Collect_split ~> Image_Collect_case_prod
haftmann@61424
  2455
  Range_Collect_split ~> Range_Collect_case_prod
haftmann@61424
  2456
  Eps_split ~> Eps_case_prod
haftmann@61424
  2457
  Eps_split_eq ~> Eps_case_prod_eq
haftmann@61424
  2458
  split_rsp ~> case_prod_rsp
haftmann@61424
  2459
  curry_split ~> curry_case_prod
haftmann@61424
  2460
  split_curry ~> case_prod_curry
wenzelm@62017
  2461
haftmann@61424
  2462
Changes in structure HOLogic:
haftmann@61424
  2463
  split_const ~> case_prod_const
haftmann@61424
  2464
  mk_split ~> mk_case_prod
haftmann@61424
  2465
  mk_psplits ~> mk_ptupleabs
haftmann@61424
  2466
  strip_psplits ~> strip_ptupleabs
wenzelm@62017
  2467
wenzelm@62017
  2468
INCOMPATIBILITY.
wenzelm@62017
  2469
wenzelm@62017
  2470
* The coercions to type 'real' have been reorganised. The function
wenzelm@62017
  2471
'real' is no longer overloaded, but has type 'nat => real' and
wenzelm@62017
  2472
abbreviates of_nat for that type. Also 'real_of_int :: int => real'
wenzelm@62017
  2473
abbreviates of_int for that type. Other overloaded instances of 'real'
wenzelm@62017
  2474
have been replaced by 'real_of_ereal' and 'real_of_float'.
wenzelm@62017
  2475
lp15@61694
  2476
Consolidated facts (among others):
lp15@61694
  2477
  real_of_nat_le_iff -> of_nat_le_iff
lp15@61694
  2478
  real_of_nat_numeral of_nat_numeral
lp15@61694
  2479
  real_of_int_zero of_int_0
lp15@61694
  2480
  real_of_nat_zero of_nat_0
lp15@61694
  2481
  real_of_one of_int_1
lp15@61694
  2482
  real_of_int_add of_int_add
lp15@61694
  2483
  real_of_nat_add of_nat_add
lp15@61694
  2484
  real_of_int_diff of_int_diff
lp15@61694
  2485
  real_of_nat_diff of_nat_diff
lp15@61694
  2486
  floor_subtract floor_diff_of_int
lp15@61694
  2487
  real_of_int_inject of_int_eq_iff
lp15@61694
  2488
  real_of_int_gt_zero_cancel_iff of_int_0_less_iff
lp15@61694
  2489
  real_of_int_ge_zero_cancel_iff of_int_0_le_iff
lp15@61694
  2490
  real_of_nat_ge_zero of_nat_0_le_iff
lp15@61694
  2491
  real_of_int_ceiling_ge le_of_int_ceiling
lp15@61694
  2492
  ceiling_less_eq ceiling_less_iff
lp15@61694
  2493
  ceiling_le_eq ceiling_le_iff
lp15@61694
  2494
  less_floor_eq less_floor_iff
lp15@61694
  2495
  floor_less_eq floor_less_iff
lp15@61694
  2496
  floor_divide_eq_div floor_divide_of_int_eq
lp15@61694
  2497
  real_of_int_zero_cancel of_nat_eq_0_iff
lp15@61694
  2498
  ceiling_real_of_int ceiling_of_int
wenzelm@62017
  2499
wenzelm@62017
  2500
INCOMPATIBILITY.
wenzelm@61143
  2501
wenzelm@60841
  2502
* Theory Map: lemma map_of_is_SomeD was a clone of map_of_SomeD and has
wenzelm@60841
  2503
been removed. INCOMPATIBILITY.
wenzelm@60841
  2504
lars@60712
  2505
* Quickcheck setup for finite sets.
lars@60712
  2506
nipkow@60171
  2507
* Discontinued simp_legacy_precond. Potential INCOMPATIBILITY.
wenzelm@60138
  2508
blanchet@60306
  2509
* Sledgehammer:
blanchet@61318
  2510
  - The MaSh relevance filter has been sped up.
blanchet@60306
  2511
  - Proof reconstruction has been improved, to minimize the incidence of
blanchet@60306
  2512
    cases where Sledgehammer gives a proof that does not work.
blanchet@60306
  2513
  - Auto Sledgehammer now minimizes and preplays the results.
blanchet@61030
  2514
  - Handle Vampire 4.0 proof output without raising exception.
blanchet@61043
  2515
  - Eliminated "MASH" environment variable. Use the "MaSh" option in
blanchet@61043
  2516
    Isabelle/jEdit instead. INCOMPATIBILITY.
blanchet@61317
  2517
  - Eliminated obsolete "blocking" option and related subcommands.
blanchet@60306
  2518
blanchet@60310
  2519
* Nitpick:
blanchet@61325
  2520
  - Fixed soundness bug in translation of "finite" predicate.
blanchet@61324
  2521
  - Fixed soundness bug in "destroy_constrs" optimization.
blanchet@62080
  2522
  - Fixed soundness bug in translation of "rat" type.
blanchet@60310
  2523
  - Removed "check_potential" and "check_genuine" options.
blanchet@61317
  2524
  - Eliminated obsolete "blocking" option.
blanchet@60310
  2525
wenzelm@62027
  2526
* (Co)datatype package:
blanchet@61345
  2527
  - New commands "lift_bnf" and "copy_bnf" for lifting (copying) a BNF
blanchet@61345
  2528
    structure on the raw type to an abstract type defined using typedef.
blanchet@61345
  2529
  - Always generate "case_transfer" theorem.
wenzelm@62235
  2530
  - For mutual types, generate slightly stronger "rel_induct",
haftmann@63946
  2531
    "rel_coinduct", and "coinduct" theorems. INCOMPATIBILITY.
blanchet@61552
  2532
  - Allow discriminators and selectors with the same name as the type
blanchet@61552
  2533
    being defined.
blanchet@61552
  2534
  - Avoid various internal name clashes (e.g., 'datatype f = f').
traytel@60920
  2535
wenzelm@62098
  2536
* Transfer: new methods for interactive debugging of 'transfer' and
wenzelm@62098
  2537
'transfer_prover': 'transfer_start', 'transfer_step', 'transfer_end',
wenzelm@62098
  2538
'transfer_prover_start' and 'transfer_prover_end'.
kuncar@61370
  2539
kleing@62118
  2540
* New diagnostic command print_record for displaying record definitions.
kleing@62118
  2541
haftmann@60868
  2542
* Division on integers is bootstrapped directly from division on
wenzelm@62017
  2543
naturals and uses generic numeral algorithm for computations. Slight
wenzelm@62017
  2544
INCOMPATIBILITY, simproc numeral_divmod replaces and generalizes former
wenzelm@62017
  2545
simprocs binary_int_div and binary_int_mod
wenzelm@62017
  2546
wenzelm@62017
  2547
* Tightened specification of class semiring_no_zero_divisors. Minor
haftmann@60516
  2548
INCOMPATIBILITY.
haftmann@60516
  2549
haftmann@60688
  2550
* Class algebraic_semidom introduces common algebraic notions of
wenzelm@62017
  2551
integral (semi)domains, particularly units. Although logically subsumed
wenzelm@62017
  2552
by fields, is is not a super class of these in order not to burden
wenzelm@62017
  2553
fields with notions that are trivial there.
wenzelm@62017
  2554
wenzelm@62017
  2555
* Class normalization_semidom specifies canonical representants for
wenzelm@62017
  2556
equivalence classes of associated elements in an integral (semi)domain.
wenzelm@62017
  2557
This formalizes associated elements as well.
haftmann@60688
  2558
haftmann@60688
  2559
* Abstract specification of gcd/lcm operations in classes semiring_gcd,
wenzelm@62017
  2560
semiring_Gcd, semiring_Lcd. Minor INCOMPATIBILITY: facts gcd_nat.commute
wenzelm@62017
  2561
and gcd_int.commute are subsumed by gcd.commute, as well as
wenzelm@62017
  2562
gcd_nat.assoc and gcd_int.assoc by gcd.assoc.
wenzelm@62017
  2563
wenzelm@62017
  2564
* Former constants Fields.divide (_ / _) and Divides.div (_ div _) are
wenzelm@62017
  2565
logically unified to Rings.divide in syntactic type class Rings.divide,
wenzelm@62017
  2566
with infix syntax (_ div _). Infix syntax (_ / _) for field division is
wenzelm@62017
  2567
added later as abbreviation in class Fields.inverse. INCOMPATIBILITY,
wenzelm@62017
  2568
instantiations must refer to Rings.divide rather than the former
wenzelm@62017
  2569
separate constants, hence infix syntax (_ / _) is usually not available
wenzelm@62017
  2570
during instantiation.
wenzelm@62017
  2571
wenzelm@62017
  2572
* New cancellation simprocs for boolean algebras to cancel complementary
wenzelm@62017
  2573
terms for sup and inf. For example, "sup x (sup y (- x))" simplifies to
wenzelm@62017
  2574
"top". INCOMPATIBILITY.
Andreas@61628
  2575
hoelzl@62101
  2576
* Class uniform_space introduces uniform spaces btw topological spaces
hoelzl@62101
  2577
and metric spaces. Minor INCOMPATIBILITY: open_<type>_def needs to be
wenzelm@62205
  2578
introduced in the form of an uniformity. Some constants are more general
wenzelm@62205
  2579
now, it may be necessary to add type class constraints.
hoelzl@62101
  2580
hoelzl@62101
  2581
  open_real_def \<leadsto> open_dist
hoelzl@62101
  2582
  open_complex_def \<leadsto> open_dist
hoelzl@62101
  2583
wenzelm@62026
  2584
* Library/Monad_Syntax: notation uses symbols \<bind> and \<then>. INCOMPATIBILITY.
wenzelm@62026
  2585
Mathias@60397
  2586
* Library/Multiset:
Mathias@60397
  2587
  - Renamed multiset inclusion operators:
Mathias@60397
  2588
      < ~> <#
blanchet@62208
  2589
      > ~> >#
Mathias@60397
  2590
      <= ~> <=#
blanchet@62208
  2591
      >= ~> >=#
Mathias@60397
  2592
      \<le> ~> \<le>#
blanchet@62208
  2593
      \<ge> ~> \<ge>#
Mathias@60397
  2594
    INCOMPATIBILITY.
blanchet@62209
  2595
  - Added multiset inclusion operator syntax:
blanchet@62209
  2596
      \<subset>#
blanchet@62209
  2597
      \<subseteq>#
blanchet@62209
  2598
      \<supset>#
blanchet@62209
  2599
      \<supseteq>#
Mathias@60397
  2600
  - "'a multiset" is no longer an instance of the "order",
Mathias@60397
  2601
    "ordered_ab_semigroup_add_imp_le", "ordered_cancel_comm_monoid_diff",
Mathias@60397
  2602
    "semilattice_inf", and "semilattice_sup" type classes. The theorems
Mathias@60397
  2603
    previously provided by these type classes (directly or indirectly)
Mathias@60397
  2604
    are now available through the "subset_mset" interpretation
Mathias@60397
  2605
    (e.g. add_mono ~> subset_mset.add_mono).
Mathias@60397
  2606
    INCOMPATIBILITY.
nipkow@60497
  2607
  - Renamed conversions:
nipkow@60515
  2608
      multiset_of ~> mset
nipkow@60515
  2609
      multiset_of_set ~> mset_set
nipkow@60497
  2610
      set_of ~> set_mset
nipkow@60497
  2611
    INCOMPATIBILITY
Mathias@60398
  2612
  - Renamed lemmas:
Mathias@60398
  2613
      mset_le_def ~> subseteq_mset_def
Mathias@60398
  2614
      mset_less_def ~> subset_mset_def
Mathias@60400
  2615
      less_eq_multiset.rep_eq ~> subseteq_mset_def
Mathias@60400
  2616
    INCOMPATIBILITY
Mathias@60400
  2617
  - Removed lemmas generated by lift_definition:
wenzelm@62235
  2618
    less_eq_multiset.abs_eq, less_eq_multiset.rsp,
wenzelm@62235
  2619
    less_eq_multiset.transfer, less_eq_multiset_def
Mathias@60400
  2620
    INCOMPATIBILITY
wenzelm@60007
  2621
wenzelm@62017
  2622
* Library/Omega_Words_Fun: Infinite words modeled as functions nat \<Rightarrow> 'a.
wenzelm@62017
  2623
wenzelm@62017
  2624
* Library/Bourbaki_Witt_Fixpoint: Added formalisation of the
wenzelm@62017
  2625
Bourbaki-Witt fixpoint theorem for increasing functions in
wenzelm@62017
  2626
chain-complete partial orders.
wenzelm@62017
  2627
wenzelm@62017
  2628
* Library/Old_Recdef: discontinued obsolete 'defer_recdef' command.
wenzelm@62017
  2629
Minor INCOMPATIBILITY, use 'function' instead.
wenzelm@62017
  2630
wenzelm@62065
  2631
* Library/Periodic_Fun: a locale that provides convenient lemmas for
wenzelm@62065
  2632
periodic functions.
eberlm@62060
  2633
wenzelm@62098
  2634
* Library/Formal_Power_Series: proper definition of division (with
wenzelm@62098
  2635
remainder) for formal power series; instances for Euclidean Ring and
wenzelm@62098
  2636
GCD.
eberlm@62086
  2637
wenzelm@62084
  2638
* HOL-Imperative_HOL: obsolete theory Legacy_Mrec has been removed.
wenzelm@62084
  2639
wenzelm@62084
  2640
* HOL-Statespace: command 'statespace' uses mandatory qualifier for
wenzelm@62084
  2641
import of parent, as for general 'locale' expressions. INCOMPATIBILITY,
wenzelm@62084
  2642
remove '!' and add '?' as required.
wenzelm@62084
  2643
wenzelm@62237
  2644
* HOL-Decision_Procs: The "approximation" method works with "powr"
wenzelm@62237
  2645
(exponentiation on real numbers) again.
wenzelm@62237
  2646
wenzelm@62084
  2647
* HOL-Multivariate_Analysis: theory Cauchy_Integral_Thm with Contour
wenzelm@62084
  2648
integrals (= complex path integrals), Cauchy's integral theorem, winding
wenzelm@62084
  2649
numbers and Cauchy's integral formula, Liouville theorem, Fundamental
wenzelm@62084
  2650
Theorem of Algebra. Ported from HOL Light.
wenzelm@62084
  2651
wenzelm@62084
  2652
* HOL-Multivariate_Analysis: topological concepts such as connected
wenzelm@62017
  2653
components, homotopic paths and the inside or outside of a set.
wenzelm@61121
  2654
wenzelm@62084
  2655
* HOL-Multivariate_Analysis: radius of convergence of power series and
wenzelm@62065
  2656
various summability tests; Harmonic numbers and the Euler–Mascheroni
wenzelm@62065
  2657
constant; the Generalised Binomial Theorem; the complex and real
wenzelm@62065
  2658
Gamma/log-Gamma/Digamma/ Polygamma functions and their most important
wenzelm@62065
  2659
properties.
eberlm@62060
  2660
wenzelm@62084
  2661
* HOL-Probability: The central limit theorem based on Levy's uniqueness
wenzelm@62084
  2662
and continuity theorems, weak convergence, and characterisitc functions.
wenzelm@62084
  2663
wenzelm@62084
  2664
* HOL-Data_Structures: new and growing session of standard data
wenzelm@62084
  2665
structures.
lammich@61178
  2666
wenzelm@60479
  2667
wenzelm@60793
  2668
*** ML ***
wenzelm@60793
  2669
wenzelm@62017
  2670
* The following combinators for low-level profiling of the ML runtime
wenzelm@62017
  2671
system are available:
wenzelm@62017
  2672
wenzelm@62017
  2673
  profile_time          (*CPU time*)
wenzelm@62017
  2674
  profile_time_thread   (*CPU time on this thread*)
wenzelm@62017
  2675
  profile_allocations   (*overall heap allocations*)
wenzelm@62017
  2676
wenzelm@62017
  2677
* Antiquotation @{undefined} or \<^undefined> inlines (raise Match).
wenzelm@62017
  2678
wenzelm@62075
  2679
* Antiquotation @{method NAME} inlines the (checked) name of the given
wenzelm@62075
  2680
Isar proof method.
wenzelm@62075
  2681
wenzelm@61922
  2682
* Pretty printing of Poly/ML compiler output in Isabelle has been
wenzelm@61922
  2683
improved: proper treatment of break offsets and blocks with consistent
wenzelm@61922
  2684
breaks.
wenzelm@61922
  2685
wenzelm@61268
  2686
* The auxiliary module Pure/display.ML has been eliminated. Its
wenzelm@61268
  2687
elementary thm print operations are now in Pure/more_thm.ML and thus
wenzelm@61268
  2688
called Thm.pretty_thm, Thm.string_of_thm etc. INCOMPATIBILITY.
wenzelm@61268
  2689
wenzelm@61144
  2690
* Simproc programming interfaces have been simplified:
wenzelm@61144
  2691
Simplifier.make_simproc and Simplifier.define_simproc supersede various
wenzelm@61144
  2692
forms of Simplifier.mk_simproc, Simplifier.simproc_global etc. Note that
wenzelm@61144
  2693
term patterns for the left-hand sides are specified with implicitly
wenzelm@61144
  2694
fixed variables, like top-level theorem statements. INCOMPATIBILITY.
wenzelm@61144
  2695
wenzelm@60802
  2696
* Instantiation rules have been re-organized as follows:
wenzelm@60802
  2697
wenzelm@60802
  2698
  Thm.instantiate  (*low-level instantiation with named arguments*)
wenzelm@60802
  2699
  Thm.instantiate' (*version with positional arguments*)
wenzelm@60802
  2700
wenzelm@60802
  2701
  Drule.infer_instantiate  (*instantiation with type inference*)
wenzelm@60802
  2702
  Drule.infer_instantiate'  (*version with positional arguments*)
wenzelm@60802
  2703
wenzelm@60802
  2704
The LHS only requires variable specifications, instead of full terms.
wenzelm@60802
  2705
Old cterm_instantiate is superseded by infer_instantiate.
wenzelm@60802
  2706
INCOMPATIBILITY, need to re-adjust some ML names and types accordingly.
wenzelm@60802
  2707
wenzelm@60793
  2708
* Old tactic shorthands atac, rtac, etac, dtac, ftac have been
wenzelm@60793
  2709
discontinued. INCOMPATIBILITY, use regular assume_tac, resolve_tac etc.
wenzelm@60793
  2710
instead (with proper context).
wenzelm@60642
  2711
wenzelm@60642
  2712
* Thm.instantiate (and derivatives) no longer require the LHS of the
wenzelm@60642
  2713
instantiation to be certified: plain variables are given directly.
wenzelm@60642
  2714
wenzelm@60707
  2715
* Subgoal.SUBPROOF and Subgoal.FOCUS combinators use anonymous
wenzelm@60707
  2716
quasi-bound variables (like the Simplifier), instead of accidentally
wenzelm@60707
  2717
named local fixes. This has the potential to improve stability of proof
wenzelm@60707
  2718
tools, but can also cause INCOMPATIBILITY for tools that don't observe
wenzelm@60707
  2719
the proof context discipline.
wenzelm@60707
  2720
wenzelm@62017
  2721
* Isar proof methods are based on a slightly more general type
wenzelm@62017
  2722
context_tactic, which allows to change the proof context dynamically
wenzelm@62017
  2723
(e.g. to update cases) and indicate explicit Seq.Error results. Former
wenzelm@62017
  2724
METHOD_CASES is superseded by CONTEXT_METHOD; further combinators are
wenzelm@62017
  2725
provided in src/Pure/Isar/method.ML for convenience. INCOMPATIBILITY.
wenzelm@61887
  2726
wenzelm@60642
  2727
wenzelm@60983
  2728
*** System ***
wenzelm@60983
  2729
wenzelm@62525
  2730
* Command-line tool "isabelle console" enables print mode "ASCII".
wenzelm@61958
  2731
wenzelm@62017
  2732
* Command-line tool "isabelle update_then" expands old Isar command
wenzelm@62017
  2733
conflations:
wenzelm@62017
  2734
wenzelm@62017
  2735
    hence  ~>  then have
wenzelm@62017
  2736
    thus   ~>  then show
wenzelm@62017
  2737
wenzelm@62017
  2738
This syntax is more orthogonal and improves readability and
wenzelm@62017
  2739
maintainability of proofs.
wenzelm@62017
  2740
wenzelm@61602
  2741
* Global session timeout is multiplied by timeout_scale factor. This
wenzelm@61602
  2742
allows to adjust large-scale tests (e.g. AFP) to overall hardware
wenzelm@61602
  2743
performance.
wenzelm@61602
  2744
wenzelm@61174
  2745
* Property values in etc/symbols may contain spaces, if written with the
wenzelm@62671
  2746
replacement character "␣" (Unicode point 0x2324). For example:
wenzelm@62671
  2747
wenzelm@62671
  2748
    \<star>  code: 0x0022c6  group: operator  font: Deja␣Vu␣Sans␣Mono
wenzelm@61174
  2749
wenzelm@60996
  2750
* Java runtime environment for x86_64-windows allows to use larger heap